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Published online 3 September 2009
Mineralogical Magazine; June 2009; v. 73; no. 3; p. 479-485; DOI: 10.1180/minmag.2009.073.3.479
© 2009 Mineralogical Society of Great Britain and Ireland
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Right arrow Articles by Suzuki, A.

Compressibility of the high-pressure polymorph of AlOOH to 17 GPa

A. Suzuki*

Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan

* E-mail: a-suzuki{at}m.tains.tohoku.ac.jp

The equation of state of {delta}-AlOOH was investigated using powder X-ray diffraction up to 17 GPa. Measurement of the volume at 300 K gave a value of the bulk modulus of K0 = 124(2) GPa, whereas its pressure derivative was K' = 13.5(7). The b axis of the unit cell is more compressible than the a and c axes - in agreement with a neutron diffraction study at high pressure by Sano-Furukawa et al. (2008). Measurements presented here show that {delta}-AlOOH has a compressibility 200% higher than in the previously reported equation of state by Vanpeteghem et al. (2002).

KEYWORDS: AlOOH, high pressure, X-ray diffraction, equation of state






JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
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