2003 – 2006

2006

451. Lipinska-Kalita, K. E., P. E. Kalita, D. M. Krol, R. J. Hemley, C. L. Gobin, and Y. Ohki, Spectroscopic properties of Cr3+ ions in nanocrystalline glass-ceramic composites, J. Non-Crystalline Solids, 352, 524-527 (2006).

450. Klug, D. D., J. S. Tse, Z. Liu and R. J. Hemley,Hydrogen-bonded dynamics and Fermi resonance in high-pressure methane-filled ice, J. Chem. Phys., 125, 154509 (2006).

449. Ahart, M., A. Asthagiri, R. E. Cohen, J. L. Yarger, H. K. Mao and R. J. Hemley, Brillouin spectroscopy of relaxor ferroelectrics and metal hydrides, J. Mat. Sci. and Engineering A, 442, 519-522 (2006).

448. Mao, W. L., H. K. Mao, Y. Meng, P. Eng, M. Y. Hu, P. Chow, Y. Q. Cai, J. Shu and R. J. Hemley, X-ray induced dissociation of H2O and formation of an O2-H2 alloy at high pressure, Science, 314, 636-638 (2006).

447. Goncharov, A. F. and R. J. Hemley, Probing hydrogen-rich molecular systems at high pressures and temperatures, Chem. Soc. Rev., 35, 899-907 (2006).

446. Militzer, B. and R. J. Hemley, Solid oxygen takes shape, Nature, 443, 150-151 (2006).

445. Degtyareva, V. F., O. Degtyareva, H. K. Mao and R. J. Hemley, High-pressure behavior of CdSb: compound decomposition, new phase formation and amorphization, Phys. Rev. B, 73, 214108 (2006).

444. Dobrzhinetskaya, L. F., Z. Liu, P. Cartigny, J. Zhang, D. Tchkhetia, R. J. Hemley and H. W. Green II, Synchrotron infrared and Raman spectroscopy of microdiamonds from Erzgebirge, Germany, Earth Planet Sci. Lett., 248, 325-334 (2006).

443. Hemley, R. J., A pressing matter, Phys. World, 19, 26-30 (2006).

442. Yoshimura, Y., S. T. Stewart, M. Somayazulu, H. K. Mao and R. J. Hemley, High-pressure x-ray diffraction and Raman spectroscopy of ice VIII, J. Chem. Phys., 124, 024502 (2006).

441. Ahart, M., A. Asthagiri, P. Dera, H. K. Mao, R. E. Cohen and R. J. Hemley, Single-domain electromechanical constants for Pb(Zn1/3Nb2/3)O3-4.5%PbTiO3 from micro-brillouin scattering, Phys. Rev. B, 88, 042908 (2006).

440. Brown, G. E., G. Calas and R. J. Hemley, Role of user facilities in Earth sciences research, Elements, 2, 23-30 (2006).

439. Hemley, R. J., Erskine Williamson, extreme conditions, and the birth of mineral physics, Phys. Today, 59, 50-56 (2006).

438. Yoshimura, Y., H. K. Mao and R. J. Hemley, Direct transformation of ice VII' to low-density amorphous ice, Chem. Phys. Lett., 420, 503-506 (2006).

437. Gregoryanz, E., C. Sanloup, R. Bini, J. Kreutz, H. J. Jodl, M. Somayazulu, H. K. Mao and R. J. Hemley, On the ε-ζ transition of nitrogen, J. Chem. Phys., 124, 116102 (2006).

436. Ho, S. S., C. S. Yan, Z. Liu, H. K. Mao and R. J. Hemley, Prospects for large single crystal CVD diamonds, Industrial Diamond Review, 66, 28-32 (2006).

435. Young, A. F., C. Sanloup, E. Gregoryanz, S. Scandolo, R. J. Hemley and H. K. Mao, Synthesis of novel transition metal nitrides IrN2 and OsN2, Phys. Rev. Lett., 96, 155501 (2006).

434. Mao, W. L., H. K. Mao, V. B. Prakapenka, J. Shu and R. J. Hemley, The effect of pressure on the structure and volume of ferromagnesian post-perovskite, Geophys. Res. Lett., 33, L12S02 (2006).

433. Struzhkin, V. V., H. K. Mao, J. F. Lin, R. J. Hemley, J. S. Tse, Y. Ma, M. Hu, and C. C. Kao, Valence band x-ray emission spectra of compressed germanium, Phys. Rev. Lett., 96, 137402 (2006).

432. Ahart, M., J. L. Yarger, K. M. Lantzky, S. Nakano, H. K. Mao and R. J. Hemley, High-pressure Brillouin scattering of amorphous BeH2, J. Chem. Phys., 124, 14502 (2006).

431. Mao, H. K., J. Badro, R. J. Hemley and A. K. Singh, Strength, anisotropy, and preferred orientation of solid argon at high pressures, J. Phys. Cond. Matt., 8, S963-S968 (2006).

430. Chellappa, R. S., D. Chandra, S. A. Gramsch, R. J. Hemley, J. F. Lin and Y. Song, Pressure induced phase transformation in LiAlH4, J. Phys. Chem. B, 110, 11088-11097 (2006).

429. Mao, W. L., H. K. Mao, W. Sturhahn, J. Zhao, V. B. Prakapenka, Y. Meng, Y. Fei and R. J. Hemley, Iron-rich post-perovskite and the origin of ultralow-velocity zones, Science, 312, 564-565 (2006).

2005

428. Wang, Z., L. L. Daemen, Y. Zhao, C. S. Zha, R. T. Downs, X. Wang, Z. L. Wang and R. J. Hemley, Morphology-tuned surface structure, mechanical stability, and tranformation mechanism in wurtzite-type ZnS nanobelts, Nature Mats., 4, 922-927 (2005).

427. Mora, A. E., J. W. Steeds, J. E. Butler, C. S. Yan, H. K. Mao, R. J. Hemley and D. Fisher, New direct evidence of point defects interacting with dislocations and grain boundaries in diamond, Phys. Stat. Sol., 202, 2943-2494 (2005).

426. Lin, J. F., W. Sturhahn, J. Zhao, G. Shen, R. J. Hemley and H. K. Mao, Nuclear resonant inelastic x-ray scattering and synchrotron Mössbauer spectroscopy with laser-heated diamond anvil cells, in Frontiers in High-Pressure Research (eds., J. Chen, Wang, Y., Duffy, T., Shen, G. and Dobrzhinetskaya, L.) 397-411 (Elsevier Science, Amsterdam, 2005).

425. Jacobsen, S. D., J. F. Lin, R. J. Angel, G. Shen, V. B. Prakapenka, P. Dera, H. K. Mao and R. J. Hemley, Single crystal synchrotron x-ray diffraction study of wüstite and magnesiowüstite at lower-mantle pressures, J. Synch. Radiation, 12, 557-583 (2005).

424. Degtyareva, O., E. Gregoryanz, H. K. Mao, and R. J. Hemley, Crystal structure of sulfur and selenium at pressures up to 160 GPa, High Press. Res., 25, 17-33 (2005).

423. Degtyareva, V. F., M. K. Sakharov, N. I. Novokhatskaya, O. Degtyareva, P. Dera, H. K. Mao and R. J. Hemley, Stability of Hume-Rothery phases in Cu-Zn alloys at pressures up to 50 GPa, J. Phys. Cond. Matt., 17, 7955-7962 (2005).

422. Song, Y., Z. Liu, R. J. Hemley, H. K. Mao and D. R. Herschbach, High-pressure vibrational spectroscopy of sulfur dioxide, J. Chem. Phys., 122, 174511 (2005).

421. Okuchi, T., G. D. Cody, H. K. Mao and R. J. Hemley, Hydrogen bonding and dynamics of methanol by high-pressure diamond anvil cell NMR, J. Chem. Phys., 122, 244509 (2005).

420. Lin, J. F., V. V. Struzhkin, S. D. Jacobsen, G. Shen, V. B. Prakapenka, H. K. Mao and R. J. Hemley, X-ray emission spectroscopy with a laser-heated diamond anvil cell: a new experimental probe of the spin state of iron in the earth's interior, J. Synch. Radiation, 12, 637-641 (2005).

419. Lipinska-Kalita, K. E., S. A. Gramsch, P. E. Kalita, R. J. Hemley, In situ raman scattering studies of high-pressure stability and transformations in the matrix of a nanostructured glass-ceramic composite, J. Raman Spectr., 63, 938-945 (2005).

418. Gasparov, L. V., D. Arenas, K. J. Choi, G. Guenthrodt, H. Berger, L. Forro, G. Margaritondo, V. V. Struzhkin, and R. J. Hemley, Magnetite: Raman study of the high-pressure and low-temperature effects, J. Appl. Phys, 97, 10A922 (2005).

417. Ding, Y., O. Degtyareva, H. Liu, M. Somayazulu, Y. Meng, J. Xu, R. J. Hemley, H. K. Mao, and C. T. Prewitt, Zone-axis x-ray study of single-crystal Fe1-xO, Phys. Rev. B, 72, 174109 (2005).

416. Freiman, Y.A., S. M. Tret'yak, H. K. Mao, and R. J. Hemley, Entropy-driven reentrant phase transitions in even-J/odd-J mixtures of linear rotors, J. Low Temp. Phys., 139, 765-772 (2005).

415. Lipinska-Kalita, K. E., D. M. Krol, R. J. Hemley, G. Mariotto, P. E. Kalita, and Y. Ohki, Synthesis and characterization of metal-dielectric composites with copper nanoparticles embedded in a glass matrix: a multi technique approach, J. Appl. Phys., 98, 054301 (2005).

414. Lipinska-Kalita, K. E., D. M. Krol, R. J. Hemley, G. Mariotto, P. E. Kalita, and Y. Ohki, Temperature effects on luminescence properties of Cr3+ ions in heterophased oxide glass based nanostructured media, J. Appl. Phys., 98, 054302 (2005).

413. Okuchi, T., H. K. Mao, and R. J. Hemley, A new gasket material for higher resolution in NMR in the diamond anvil cell, in Advances in High-Pressure Technology for Geophysical Applications, (eds. J. Chen, Wang, Y., Duffy, T., Shen, G. and Dobrzhinetskaya, L.) 503-509 (Elsevier, Amsterdam, 2005).

412. Santoro, M., J. F. Lin, V. V. Struzhkin, H. K. Mao and R. J. Hemley, In situ Raman spectroscopy with laser-heated diamond anvil cells, in Advances in High-Pressure Technology for Geophysical Applications (eds. J. Chen, Wang, Y., Duffy, T., Shen, G. and Dobrzhinetskaya, L.) 413-423 (Elsevier, Amsterdam, 2005) (AGU).

411. Chen, X. J., V. V. Struzhkin, Z. Wu, R. E. Cohen, S. Kung, H. K. Mao and R. J. Hemley, Electronic stiffness of superconducting single crystal niobium nitride under pressure, Phys. Rev. B., 72 094515 (2005).

410. Mao, W. L., Y. Meng, G. Shen, V. B. Prakapenka, A. J. Campbell, D. L. Heinz, J. Shu, R. Caracas, R. E. Cohen, Y. Fei, R. J. Hemley and H. K. Mao, Iron-rich silicates in the Earth's D" Layer, Proc. Nat. Acad. Sci., 102, 9751-9753 (2005).

409. Ding, Y., H. Liu, J. Xu, C. T. Prewitt, R. J. Hemley and H. K. Mao, Zone-axis diffraction study of pressure induced inhomogeneity in single-crystal Fe1-xO, Appl. Phys. Lett., 87, 041912 (2005).

408. Lin, J. F., V. Struzhkin, S. D. Jacobsen, M. Y. Hu, P. Chow, J. Kung, H. Liu, H. K. Mao and R. J. Hemley, Spin transition of iron in magnesiowüstite in the Earth's lower mantle, Nature, 436, 377-380 (2005).

407. Mora, A. E., J. W. Steeds, J. E. Butler, C. S. Yan, H. K. Mao and R. J. Hemley, Direct evidence of dislocations interaction between and point defects in diamond, Phys. Stat. Sol. (a), 202, R69-R71 (2005).

406. Lin, J. F., W. Sturhahn, J. Zhao, G. Shen, H. K. Mao and R. J. Hemley, Sound velocities of hot dense iron: Birch's law revisited, Science, 308, 1892-1894 (2005).

405. Degtyareva, O., E. Gregoryanz, M. Somayazulu, H. K. Mao and R. J. Hemley, Crystal structures of superconducting phases of S and Se, Phys. Rev. B, 71, 214104 (2005).

404. Goncharov, A. F., V. V. Struzhkin, H. K. Mao, and R. J. Hemley, Spectroscopic evidence for broken symmetry transitions in dense lithium up to megabar pressures, Phys. Rev. B, 71 18414 (2005).

403. Merkel, S., J. Shu, P. Gillet, H. K. Mao, and R. J. Hemley, X-ray diffraction study of the single crystal elastic moduli of ε-Fe up to 30 GPa, J.Geophys. Res., 10, B05201 (2005).

402. Lin, J. F., E. Gregoryanz, V. V. Struzhkin, M. Somayaulu, H. K. Mao and R. J. Hemley, Melting behavior of H2O at high pressures and temperatures, Geophys. Res. Lett., 32, L11306 (2005).

401. Gregoryanz, E., O. Degtyareva, M. Somayaulu, R. J. Hemley and H. K. Mao, Melting of sodium, Phys. Rev. Lett., 94, 185502 (2005).

400. Sharma, A., G. D. Cody, J. Scott and R. J. Hemley, Molecules to microbes: in-situ studies of organic systems under hydrothermal conditions, in Chemistry Under Extreme Conditions (ed. R. Manaa) 83-108 (Elsevier Science, 2005).

399. Song, Y., R. J. Hemley, H. K. Mao and D. R. Herschbach, Nitrogen-containing molecular systems at high pressures and temperatures, in Chemistry under Extreme Conditions (ed. R. Manaa) 189-222 (Elsevier Science, 2005).

398. Ahart, M., R. E. Cohen, V. Struzhkin, E. Gregoryanz, D. Rytz, S. Prosandeev, R. J. Hemley and H. K. Mao, High-pressure scattering and x-ray diffraction study of the relaxor ferroelectric 0.96Pb(Zn1/3Nb2/3)O3 - 0.04PbTiO3, Phys. Rev. B, 71, 144102 (2005).

397. Chen, X. J., V. V. Struzhkin, Z. Wu, M. Somayazulu, J. Qian, S. Kung, A. N. Christensen, Y. Zhao, R. E. Cohen, H. K. Mao, and R. J. Hemley, Hard superconducting nitrides, Proc. Nat. Acad. Sci., 102, 3198-3201 (2005).

396. Hemley, R. J., H. K. Mao, and V. V. Struzhkin, Synchrotron radiation and high pressure: new light on materials under extreme conditions, J. Synch. Radiation, 12. 135-154 (2005).

395. Hemley, R. J., Y. C. Chen, and C. S. Yan, Growing diamond crystals by chemical vapor deposition, Elements, 1, 39-43 (2005).

394. Degtyareva, O., E. Gregoryanz, M. Somayazulu, P. Dera, H. K. Mao, and R. J. Hemley, Novel chain structures in group VI elements, Nature Materials, 4, 152-155 (2005).

393. Cai, Y. Q., H. K. Mao, P. C. Chow, J. S. Tse, Y. Ma, S. Patchkovskii, J. F. Shu, V. Struzhkin, R. J. Hemley, H. Ishii, C. C. Chen, I. Jarrige, C. T. Chen, S. R. Shieh, E. P. Huang, and C. C. Kao, Ordering of hydrogen bonds in high-pressure low-temperature H2O, Phys. Rev. Let, 94, 025502 (2005).

392. Mao, W. L., V. V. Struzhkin, H. K. Mao, and R. J. Hemley, Pressure-temperature stability of the van der Waals compound (H2)4CH4, Chem. Phys. Lett., 402, 66-70 (2005).

391. Okuchi, T., R. J. Hemley, and H. K. Mao, Radio frequency probe with improved sensitivity for diamond anvil cell nuclear magnetic resonance, Rev. Sci. Instrum., 76, DOI: 10.1063/1061.850653 (2005).

390. Ding, Y., J. Xu, C. T. Prewitt, R. J. Hemley, H. K. Mao, J. A. Cowan, J. Zhang, J. Qian, S. C. Vogel, K. Lokshin, and Y. Zhao, Variable pressure-temperature neutron diffraction of wustite (Fe1- xO): Absence of long-range magnetic order to 20 GPa, Appl. Phys. Lett., 86, 052505 (2005).

2004

389. Santoro, M., E. Gregoryanz, H. K. Mao, and R. J. Hemley, New phase diagram of oxygen at high pressure and temperature, Phys. Rev. Lett., 93, 265701 (2004).

388. Lin, J. F., V. V. Struzhkin, H. K. Mao, R. J. Hemley, Magnetic transition in compressed Fe3C from x-ray emission spectroscopy, Phys. Rev. B, 70, 212405 (2004).

387. Chen, X. J., V. V. Struzhkin, R. J. Hemley, H. K. Mao, and C. Kendziora, High-pressure phase diagram of Bi2Sr2CaCu2O8+δsingle crystals, Phys. Rev. B, 70, 214502 (2004).

386. Yoshimura, Y., H. K. Mao, and R. J. Hemley, Transformation of ice in aqueous KCl solution to a high-pressure, low-temperature phase, Chem. Phys. Lett., 400, 511-514 (2004).

385. Slebobnick, C., J. Zhao, R. Angel, B. E. Hanson, Y. Song, Z. Liu, and R. J. Hemley, High pressure study of Ru3(CO)12 by x-ray diffraction, Raman and infrared spectroscopy, Inorg. Chem., 43, 5245-5252 (2004).

384. Gregoryanz, E., C. Sanloup, M. Somayazulu, J. Badro, G. Fiquet, H. K. Mao, and R. J. Hemley, Synthesis and characterization of binary noble metal nitride: PtN, Nature Materials, 3, 249-297 (2004).

383. Zha, C.-S., H. K. Mao, and R. J. Hemley, Elasticity of dense helium, Phys. Rev. B, 70, 174107 (2004).

382. Mao, W. L., W. Sturhahn, D. L. Heinz, H. K. Mao, J. Shu, and R. J. Hemley, Nuclear resonant x-ray scattering of iron hydride at high pressure, Geophys. Res. Lett., 31, L15618 (2004).

381. Lin, J. F., M. Santoro, V. V. Struzhkin, H. K. Mao, and R. J. Hemley, In situ high pressure-temperature Raman spectroscopy technique with laser-heated diamond anvil cells, Rev. Sci. Instrum., 75, 3302 (2004).

380. Eremets, M. I., A. G. Gavriliuk, N. R. Serebryanaya, I. A. Trojan, D. A. Dzivenko, R. Boehler, H. K. Mao, and R. J. Hemley, Structural transformation of molecular nitrogen to a single-bonded atomic state at high pressures, J. Chem. Phys., 121, 11296, (2004).

379. Anand, M. L., A. Taylor, M. A. Nazarov, J. Shu, H. K. Mao, and R. J. Hemley, Space weathering on airless planetary bodies: clues from the lunar mineral hapkeite, Proc. Nat. Acad. Sci., 101, 6847-6851 (2004).

378. Yan, C. S., H. K. Mao, W. Li, J. Qian, Y. Zhao, and R. J. Hemley, Ultrahard single crystal diamond from chemical vapor deposition, Phys. Stat. Sol. A, 201, 25-27 (2004).

377. Xu, J., H. K. Mao, R. J. Hemley, and E. Hines, Large volume high pressure cell with supported moissanite anvils, Rev. Sci. Instrum., 75, 1034-1038 (2004).

376. Xu, J., Y. Ding, S. D. Jacobsen, H. K. Mao, R. J. Hemley, J. Zhang, J. Qian, C. Pantea, S. C. Vogel, D. J. Williams, and Y. Zhao, Powder neutron diffraction of wüstite (Fe0.93O) to 12 GPa using large moissanite anvils, High Pressure. Res., 24, 247-253 (2004).

375. Struzhkin, V. V., H. K. Mao, W. L. Mao, R. J. Hemley, W. Sturhahn, E. E. Alp, C. L'Abbe, M. Y. Hu, and D. Errandonea, Phonon density of states and elastic properties, of Fe-based materials under compression, Hyperfine Interactions, 153, 3-15 (2004).

374. Struzhkin, V. V., R. J. Hemley, and H. K. Mao, New condensed matter probes for diamond anvil cell technology, J. Phys.: Cond. Matter, 16, 1-16 (2004).

373. Scott, H. P., R. J. Hemley, H. K. Mao, D. R. Herschbach, L. E. Fried, W. M. Howard, and S. Bastea, Generation of methane in the Earth's mantle: in-situ high P-T measurements of carbonate reduction, Proc. Nat. Acad. Sci., 101, 14023-14026 (2004).

372. Santoro, M., J.-F. Lin, H. K. Mao, and R. J. Hemley, In situ high P-T Raman spectroscopy and laser heating of carbon dioxide, J. Chem. Phys., 121, 2780-2787 (2004).

371. Merkel, S., H.-R. Wenk, P. Gillet, H. K. Mao, and R. J. Hemley, Deformation of polycrystalline iron up to 30 GPa and 1000 K, Phys. Earth Planet. Inter., 145, 239-251 (2004).

370. Meng, Y., H. K. Mao, P. J. Eng, T. P. Trainor, M. Newville, M. Y. Hu, C. Kao, J. Shu, D. Hausermann, and R. J. Hemley, The formation of sp3 bonding in compressed BN, Nature Materials, 3, 111-114 (2004).

369. Mao, W. L., G. Shen, V. B. Prakapenka, Y. Meng, A. J. Campbell, D. L. Heinz, J. Shu, R. J. Hemley, and H. K. Mao, Ferromagnesian postperovskite silicates in the D" layer of the Earth, Proc. Nat. Aca. Sci., 101, 15867-15869 (2004).

368. Ma, Y., M. Somayazulu, G. Shen, H. K. Mao, J. Shu, and R. J. Hemley, In situ x-ray difraction studies of iron to Earth-core conditions, Phys. Earth Planet. Inter., 143-144, 455-467 (2004).

367. Lokshin, K. A., Y. Zhao, D. He, W. L. Mao, H. K. Mao, R. J. Hemley, M. V. Lobanov, and M. Greenblatt, Structure and dynamics of hydrogen molecules in thge novel clathrate hydrate by high pressure neutron diffraction, Phys. Rev. Lett., 93, 125503 (2004).

366. Liu, Z., J. Xu, H. Scott, Q. Williams, H. K. Mao, and R. J. Hemley, Moissanite (SiC) as windows and anvils for high-pressure infrared spectroscopy, Rev. Sci. Instrum., 75, 5026 (2004).

365. Lin, J. F., W. Sturhahn, J. Zhao, G. Shen, H. K. Mao, and R. J. Hemley, Absolute temperature measurement in the diamond anvil cell, Geophys. Res. Lett., 31, 14611 (2004).

364. Lin, J.-F., O. Degtyareva, C. Prewitt, P. Dera, S. Nagayoshi, E. Gregoryanz, H. K. Mao, and R. J. Hemley, Crystal structure of a high pressure-temperature phase of corundum by situ X-ray diffraction, Nature Materials, 3, 389-393 (2004).

363. Lin, J. F., B. Militzer, V. Struzhkin, E. Gregoryanz, R. J. Hemley, and H. K. Mao, High pressure- temperature Raman measurements of H2O melting to 22 GPa, J. Chem. Phys., 121, 8423-8427 (2004).

362. Lin, J. F., Y. Fei, W. Sturhahn, J. Zhao, H. K. Mao, and R. J. Hemley, Magnetic transition and sound velocities of Fe3S at high pressure: implications for Earth and planetary cores, Earth Planet Sci. Lett., 226, 33-40 (2004).

361. Li, J., V. V. Struzhkin, H. K. Mao, J. Shu, R. J. Hemley, Y. Fei, B. Mysen, P. Dera, V. Prakapenka, and G. Shen, Electronic spin state of iron in lower mantle perovskite, Proc. Nat. Acad. Sci., 101, 14027-14030 (2004).

360. Klug, D. D., J. S. Tse, Z. Liu, X. Gonze, and R. J. Hemley, Anomalous transformations in Ice VII, Phys. Rev. B, 70, 144113 (2004).

359. Hemley, R. J. and H. K. Mao. New findings in static high-pressure science, in Proceedings of the 13th APS Conference on Shock-compression of Condensed Matter (eds. M. D. Furnish, Gupta, Y. M. and Forbes, J. W.) 17-26 (American Institute of Physics, Argonne, IL, 2004).

358. Guthrie, M., C. A. Tulk, C. J. Benmore, J. Xu, J. L. Yarger, D. D. Klug, J. S. Tse, H. K. Mao, and R. J. Hemley, The formation and structure of a dense octahedral glass, Phys. Rev. Lett., 93, 115502 (2004).

357. Freiman, Y. A., S. M. Tret'yak, T. N. Antsygina, and R. J. Hemley, Magnetic quantum rotors, J. Low Temp. Phys., 134, 535-540 (2004).

356. Eremets, M. I., M. Y. Popov, I. A. Trojan, V. N. Denisov, R. Boehler, and R. J. Hemley, Polymerization of nitrogen in sodium azide, J. Chem. Phys., 120, 10618-10623 (2004).

355. Chen, X. J., V. V. Struzhkin, S. Jung, H. K. Mao, R. J. Hemley, and A. N. Christensen, Pressure- induced phonon frequency shifts in transition-metal nitrides, Phys. Rev. B, 70, 104501 (2004).

354. Charles, S. J., J. E. Butler, B. N. Feygelson, M. Newton, D. L. Carroll, J. W. Steeds, H. Darwsh, C. S. Yan, and R. J. Hemley, Characterization of nitrogen-doped, chemical vapor deposited single crystal diamond before and after high temperature, high-pressure annealing, Phys. Stat. Sol., 242, 2473-2485 (2004).

2003

353. Hemley, R. J., X. Liu, E. Gregoryanz, and H. K. Mao, Infrared and Raman microspectroscopy of >minerals under pressure, Microspectroscopy and Microanalysis, 9, 1098-1099 (2003).

352. Li, J., C. Hadidiacos, H. K. Mao, Y. Fei, and R. J. Hemley, Behavior of thermocouples under high pressure in a multi-anvil apparatus, High Pressure Res., 23, 389-401 (2003).

351. Song, Y., R. J. Hemley, H. K. Mao, Z. X. Liu, and D. R. Herschbach, New phases of N2O4 at high pressures and high temperatures, Chem. Phys. Lett., 382, 686-692 (2003).

350. Chen, M., J. Shu, H. K. Mao, X. Xie, and R. J. Hemley, Natural occurrence and synthesis of two new post-spinel polymorphs of chromite, Proc. Nat. Acad. Sci., 100, 14651-14654 (2003).

349. Lin, J.-F., V. V. Struzhkin, W. Sturhahn, E. Huang, J. Zhao, M. Y. Hu, E. E. Alp, H. K. Mao, N. Boctor, and R. J. Hemley, Sound velocities of iron-nickel and iron-silicon alloys in the Earth's core, Geophys. Res. Lett., 30, 2112 (2003).

348. Lin, J.-F., J. Shu, H. K. Mao, R. J. Hemley, and G. Shen, Amorphous boron gasket in diamond anvil cell research, Rev. Sci. Instrum., 74, 4732-4736 (2003).

347. Mao, W. L., H. K. Mao, C.S. Yan, J. Shu, J. Hu, and R. J. Hemley, Generation of ultrahigh pressure using single-crystal CVD diamond anvils, Appl. Phys. Lett., 83, 5190-5192 (2003).

346. Goncharov, A. F., E. Gregoryanz, R. J. Hemley, and H. K. Mao, Molecular character of the metallic high-pressure phase of oxygen, Phys. Rev. B, 68, 100102 (2003).

345. Freiman, Y. A., S. M. Tret'yak, M. Sergei, T. N. Antsygina, and R. J. Hemley, Novel Phase behavior in quantum rotors, TempJ. Low . Phys., 133, 251-260 (2003).

344. Liu, Z. X., G. A. Lager, R. J. Hemley, and N. L. Ross, Synchrotron infrared spectroscopy of OH-chondrodite and OH-clinohumite at high pressure, Am. Mineral, 88, 1412-1415 (2003).

343. Strzhemchny, M. A., and R. J. Hemley, Ortho-para conversion in the solid hydrogens at high pressure, J. Low Temp. Phys., 29, 941-946 (2003).

342. Hellwig, H., R. J. Hemley, and R. E. Cohen, Micro-Brillouin investigations of relaxor ferroelectrics, AIP Conference Proceedings, Fundamental Physics of Ferroelectrics 2003, Williamsburg, VA, 677, 65-73 (2003).

341. Antsygina, T. N., S. M. Tret'yak, Y. A. Freiman, and R. J. Hemley, Orientational ordering in solid hydrogens with J=1 in the presence of a crystal field, J. Low Temp. Phys., 29, 378-381 (2003).

340. Mao, W. L., H. K. Mao, P. J. Eng, T. P. Trainor, M. Newville, C.C. Kao, D. L. Heinz, J. Shu, Y. Meng, and R. J. Hemley, Bonding changes in compressed superhard graphite, Science, 302, 425-427 (2003).

339. Gregoryanz, E., A. F. Goncharov, K. Matsuishi, H. K. Mao, and R. J. Hemley, Raman spectroscopy of hot dense hydrogen, Phys. Rev. Lett., 90, 175701, 1-4 (2003).

338. Hellwig, H., A. F. Goncharov, H. K. Mao, E. Gregoryanz, and R. J. Hemley, Brillouin and Raman spectroscopy of the ferroelastic rutile-to-CaCl2 transition in SnO2 at high pressure, Phys. Rev. B, 67, 4110 (2003).

337. Eremets, M. I., V. V. Struzhkin, H. K. Mao, and R. J. Hemley, Exploring superconductivity in low-Z materials at megabar pressures, Physica B, 329, 1312-1316, Part 2 (2003).

336. Song, Y., R. J. Hemley, Z. Liu, M. Somayazulu, H. K. Mao, and D. R. Herschbach, High-pressure stability, transformations and vibrational dynamics of nitrosonium nitrate from synchrotron infrared and Raman spectroscopy, J. Chem. Phys., 119, 2232-2240 (2003).

335. Song, Y., M. Somayazulu, H. K. Mao, R. J. Hemley, and D. R. Herschbach, High pressure structure and equation of state of nitrosonium nitrate from synchrotron x-ray diffraction, J. Chem. Phys., 118, 8350-8356 (2003).

334. Matsuishi, K., E. Gregoryanz, H. K. Mao, and R. J. Hemley, Equation of state and intermolecular interactions in fluid hydrogen from Brillouin scattering at high pressures and temperatures, J. Chem. Phys., 118, 10683-10695 (2003).

333. Ma, Y., R. J. Hemley, C. T. Prewitt, G. Zou, and H. K. Mao, High P-T x-ray diffraction of study β-boron to 30 GPa, Phys. Rev. B, 67, 174116 (2003).

332. Merkel, S., H. R. Wenk, J. Badro, G. Montagnac, P. Gillet, H. K. Mao, and R. J. Hemley, Deformation of (Mg0.9, Fe0.1) SiO3 perovskite aggregates up to 32 GPa, Earth Plan. Sci. Lett., 209, 351-360 (2003).

331. Lin, J.-F., D. L. Heinz, H. K. Mao, R. J. Hemley, J. M. Devine, J. Li, and G. Shen, Stability of magnesiowustite in Earth's lower mantle, Proc. Nat. Acad. Sci., 100, 4405-4408 (2003).

330. Gregoryanz, E., R. J. Hemley, H. K. Mao, and R. E. Cohen, High pressure elasticity of alpha- quartz: Instability and ferroelastic transition, Reply to Comment by M. Müser and P. Schöffel, Phys. Rev. Lett., 90, 079702 (2003).