Pressure-induced tricritical phase transition from the scheelite structure to the fergusonite structure in LiLuF4

被引：34

作者：

Grzechnik, A

Friese, K

Dmitriev, V

Weber, HP

Gesland, JY

Crichton, WA

机构：

[1] Univ Basque Country, Dept Fis Mat Condensada, E-48080 Bilbao, Spain

[2] European Synchrotron Radiat Facil, Swiss Norwegian Beamlines, Grp Struct Mat Extreme Condit, F-38043 Grenoble, France

[3] Ecole Polytech Fed Lausanne, EPFL, SB, IPMC,LCR,Lab Cristallog, CH-1015 Lausanne, Switzerland

[4] Univ Maine Cristallogenese, F-72075 Le Mans, France

[5] European Synchrotron Radiat Facil, F-38043 Grenoble, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2005年 / 17卷 / 04期

关键词：

D O I：

10.1088/0953-8984/17/4/018

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

LiLuF4 scheelite(I4(1)/a, Z = 4) has been investigated at high pressures using synchrotron angle-dispersive x-ray powder diffraction in a diamond anvil cell at room temperature. At 10.7 GPa, it reversibly undergoes a tricritical phase transition to the fergusonite structure (C12/c1, Z = 4), a distorted modification of the scheelite type. No other phase occurs in this material up to 19.5 GPa, the highest pressure in this study. Such a high-pressure behaviour is compared with the pressure-induced transformations in LiYF4 and LiGdF4, adding on to our knowledge of the structural systematics in LiMF4 compounds.

引用

页码：763 / 770

页数：8

共 24 条

[1] VARIANTS OF CATION ARRANGEMENT IN THE 3(6)-NET OF TANTALATES AND NIOBATES WITH 1/1-STOICHIOMETRY
BORISOV, SV
IPATOVA, EN
[J]. JOURNAL OF STRUCTURAL CHEMISTRY, 1994, 35 (06) : 865 - 870
[2] CRICHTON W, 2004, IN PRESS Z KRISTALL
[3] Effects of pressure on the local atomic structure of CaWO4 and YLiF4:: mechanism of the scheelite-to-wolframite and scheelite-to-fergusonite transitions
Errandonea, D
Manjón, FJ
Somayazulu, M
Häusermann, D
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 2004, 177 (4-5) : 1087 - 1097
[4] FOX, 'free objects for crystallography':: a modular approach to ab initio structure determination from powder diffraction
Favre-Nicolin, V
Cerny, R
[J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2002, 35 : 734 - 743
[5] STRUCTURE OF THE LASER HOST MATERIAL LIYF4
GARCIA, E
RYAN, RR
[J]. ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 1993, 49 : 2053 - 2054
[6] Decomposition of LiGdF4 scheelite at high pressures
Grzechnik, A
Crichton, WA
Bouvier, P
Dmitriev, V
Weber, HP
Gesland, JY
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (43) : 7779 - 7786
[7] Scheelite CaWO4 at high pressures
Grzechnik, A
Crichton, WA
Hanfland, M
van Smaalen, S
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (43) : 7261 - 7270
[8] Scheelite to fergusonite phase transition in YLiF4 at high pressures -: art. no. 104102
Grzechnik, A
Syassen, K
Loa, I
Hanfland, M
Gesland, JY
[J]. PHYSICAL REVIEW B, 2002, 65 (10): : 1 - 6
[9] Two-dimensional detector software: From real detector to idealised image or two-theta scan
Hammersley, AP
Svensson, SO
Hanfland, M
Fitch, AN
Hausermann, D
[J]. HIGH PRESSURE RESEARCH, 1996, 14 (4-6) : 235 - 248
[10] Hyde B., 1989, INORGANIC CRYSTAL ST

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