High-pressure phase transformation studies in gadolinium to 106 GPa

Jagannadham Akella; Gordon S. Smith; Andrew P. Jephcoat

doi:10.1016/0022-3697(88)90069-8

High-pressure phase transformation studies in gadolinium to 106 GPa

Jagannadham Akella, Gordon S. Smith, Andrew P. Jephcoat

Institute for Planetary Materials

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

We investigated the high-pressure structural transformations in gadolinium at room temperature. Up to a pressure of 106 GPa, gadolinium metal undergoes four structural transformations: h.c.p.→ Sm-type → d.h.c.p. → f.c.c. → t.h.c.p. The corresponding transformation pressures are: 1.5 ± 0.2 GPa, 6.5 ± 0.5 GPa; onset at 24.0 GPa and completion at 29.0 GPa; and between 44.0 and 55.0 GPa, respectively. We found a much larger stability range for f.c.c.-gadolinium phase than that reported by others.

Original language	English
Pages (from-to)	573-576
Number of pages	4
Journal	Journal of Physics and Chemistry of Solids
Volume	49
Issue number	5
DOIs	https://doi.org/10.1016/0022-3697(88)90069-8
Publication status	Published - 1988

Keywords

Gadolinium
diamond-cell
equation-of-state
megabar

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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@article{4f2984a9eafa4e7887ec52aca204ec29,

title = "High-pressure phase transformation studies in gadolinium to 106 GPa",

abstract = "We investigated the high-pressure structural transformations in gadolinium at room temperature. Up to a pressure of 106 GPa, gadolinium metal undergoes four structural transformations: h.c.p.→ Sm-type → d.h.c.p. → f.c.c. → t.h.c.p. The corresponding transformation pressures are: 1.5 ± 0.2 GPa, 6.5 ± 0.5 GPa; onset at 24.0 GPa and completion at 29.0 GPa; and between 44.0 and 55.0 GPa, respectively. We found a much larger stability range for f.c.c.-gadolinium phase than that reported by others.",

keywords = "Gadolinium, diamond-cell, equation-of-state, megabar",

author = "Jagannadham Akella and Smith, {Gordon S.} and Jephcoat, {Andrew P.}",

note = "Funding Information: Acknowledgements-This work was performed under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under contract no. W-7405-ENG-48. Out thanks are due to Drs David Mao, Russ Hemley and C. S. Zha of the Carnegie Institution Geophysical laboratory, and Drs H. Weed, D. Young and A. K. McMahan of our laboratory for their help.",

year = "1988",

doi = "10.1016/0022-3697(88)90069-8",

language = "English",

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journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

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TY - JOUR

T1 - High-pressure phase transformation studies in gadolinium to 106 GPa

AU - Akella, Jagannadham

AU - Smith, Gordon S.

AU - Jephcoat, Andrew P.

N1 - Funding Information: Acknowledgements-This work was performed under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under contract no. W-7405-ENG-48. Out thanks are due to Drs David Mao, Russ Hemley and C. S. Zha of the Carnegie Institution Geophysical laboratory, and Drs H. Weed, D. Young and A. K. McMahan of our laboratory for their help.

PY - 1988

Y1 - 1988

N2 - We investigated the high-pressure structural transformations in gadolinium at room temperature. Up to a pressure of 106 GPa, gadolinium metal undergoes four structural transformations: h.c.p.→ Sm-type → d.h.c.p. → f.c.c. → t.h.c.p. The corresponding transformation pressures are: 1.5 ± 0.2 GPa, 6.5 ± 0.5 GPa; onset at 24.0 GPa and completion at 29.0 GPa; and between 44.0 and 55.0 GPa, respectively. We found a much larger stability range for f.c.c.-gadolinium phase than that reported by others.

AB - We investigated the high-pressure structural transformations in gadolinium at room temperature. Up to a pressure of 106 GPa, gadolinium metal undergoes four structural transformations: h.c.p.→ Sm-type → d.h.c.p. → f.c.c. → t.h.c.p. The corresponding transformation pressures are: 1.5 ± 0.2 GPa, 6.5 ± 0.5 GPa; onset at 24.0 GPa and completion at 29.0 GPa; and between 44.0 and 55.0 GPa, respectively. We found a much larger stability range for f.c.c.-gadolinium phase than that reported by others.

KW - Gadolinium

KW - diamond-cell

KW - equation-of-state

KW - megabar

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U2 - 10.1016/0022-3697(88)90069-8

DO - 10.1016/0022-3697(88)90069-8

M3 - Article

AN - SCOPUS:0023829092

VL - 49

SP - 573

EP - 576

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

IS - 5

ER -

High-pressure phase transformation studies in gadolinium to 106 GPa

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Keywords

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