Skip to main content

Pressure-Induced Distortive Phase Transition in Chromite-Spinel at 29 GPa

  • Jinfu Shu (a1), Wendy L. Mao (a2), Russell J Hemley (a3) and Hokwang Mao (a4)

A natural chromite single crystal was compressed in a helium pressure medium to just above 35 GPa at ambient temperature and studied with energy-dispersive x-ray diffraction. The volume compression of the cubic, spinel-type structure was fit to a third-order Birch-Murnaghan equation of state with parameters a0= 8.338(4) Å, V0 = 579.6(9) Å3, K0 =179(10) GPa, and K' = 3.9(9) up to 29 GPa. A distortive phase transition was discovered at higher pressures to a CaAl2O4-type orthorhombic structure, with two cubic unit-cell axes increasing and the third decreasing with increasing pressure. The transition can be fit to a Landau-type strain-order formulism with approximately 5% volume decrease from the cubic phase at 35 GPa. The transition may be triggered by electronic or magnetic transitions in the 3d elements Fe and Cr cations.

Hide All
1Mao H. K. and Bell P. M., Carnegie Inst. Washington Yearb. 70, 176 (1971).
2Bassett W. A. and Ming L. C., Phys. Earth Planet. Interiors 6, 154 (1972).
3Mao H. K., Takahashi T., Bassett W. A., et al., J. Geophys. Res. 79, 1165 (1974).
4Liu L. G., Nature 262, 770 (1976).
5Irifune T., Nishiyama N., Kuroda K., et al., Science 279, 1698 (1998).
6Shim S., Duffy T. S., and Takemura K., Earth Planet. Sci. Lett. 203, 729 (2002).
7Chen M., Shu J., Xie X., et al., Geochim. Cosmochim. Acta 67, 3937 (2003).
8Chen M., Shu J., Mao H. K., et al., Proc. Nat. Acad. Sci. 100, 14651 (2003).
9Rozenberg G. K., Pasternak M. P., Xu W., et al., Phys. Rev. Lett. 96, 5705 (2006).
10Badro J., Fiquet G., Guyot F., et al., Science 300, 789 (2003).
11Lin J.-F., Struzhkin V. V., Jacobsen S. D., et al., Nature 436, 377 (2005).
12McWhan D. B., Rice T. M., and Remeika J. P., Phys. Rev. Lett. 23, 1384 (1969).
13Mott N. F., Metal-Insulator Transitions (Taylor and Franscis, London, 1974).
14Shim S.-H., Duffy T. S., Jeanloz R., et al., Phys. Rev. B 69, 144107 (2004).
15Merrill L. and Bassett W. A., Rev. Sci. Instrum. 45, 290 (1974).
16Mao H. K. and Hemley R. J., Phil. Trans. R. Soc. Lond. A 354, 1315 (1996).
17Bell P. M. and Mao H. K., Carnegie Inst. Washington Yearb. 80, 404 (1981).
18Mao H. K., Xu J., and Bell P. M., J. Geophys. Res. 91, B5, 4673 (1986).
19Mao H. K., Jephcoat A. P., Hemley R. J., et al., Science 239, 1131 (1988).
20Carpenter M. A. and Salje E. K. H., Eur. J. Mineral. 10, 693 (1998).
21Hemley R. J., Shu J., Carpenter M. A., et al., Solid State Comm. 114, 527 (2000).
22Mao H. K., Shu J., Fei Y., et al., Phys. Earth Planet. Inter. 96, 135 (1996).
23Ono S., Ohishi Y., and Kikegawa T., J. Phys.: Condens. Matter 19, 036205 (2007).
24Yoo C. S., Maddox B., Klepeis J.-H. P., et al., Phys. Rev. Lett. 94, 115502 (2005).
25Kondo T., Yagi T., Syono Y., et al., J. Appl. Phys. 87, 4153 (2000).
26Guo Q., Mao H. K., Hu J., et al., J. Phys.: Condens. Matter 14, 11369 (2002).
27Liu J. F., He Y., Chen W., et al., J. Phys. Chem. C Lett. (2006).
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 0
Total number of PDF views: 2 *
Loading metrics...

Abstract views

Total abstract views: 21 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 20th November 2017. This data will be updated every 24 hours.