Synthesis and compressive behavior of Cr2GeC up to 48 GPa

被引：26

作者：

Phatak, Nishad A. ^{[1
]}

Kulkarni, Shrinivas R. ^{[1
]}

Drozd, Vadym ^{[1
]}

Saxena, Surendra K. ^{[1
]}

Deng, Liwei ^{[3
,4
]}

Fei, Yingwei ^{[3
,4
]}

Hu, Jingzhu ^{[5
]}

Luo, Wei ^{[2
]}

Ahuja, Rajeev ^{[2
]}

机构：

[1] Florida Int Univ, Ctr Study Matter Extreme Condit CeSMEC, Miami, FL 33199 USA

[2] Uppsala Univ, Dept Phys, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden

[3] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA

[4] Ctr High Pressure, Washington, DC 20015 USA

[5] Univ Chicago, X17C NSLS Cars, Upton, NY 11793 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 463卷 / 1-2期

基金：

美国国家科学基金会; 美国能源部;

关键词：

MAX phases; synthesis; ternary layered carbide; Cr2GeC; bulk modulus; high pressure; diamond anvil cell; X-ray diffraction; synchrotron radiation;

D O I：

10.1016/j.jallcom.2007.09.078

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

M(n+1)AX(n) compounds have gathered huge momentum because of its exciting properties. In this paper we report the synthesis of ternary layered ceramic Cr2GeC, a 211 M(n+1)AX(n) compound by hot-pressing. Scanning electron microscopy and X-ray diffraction have been employed to characterize the new synthesized phase. High-pressure compressibility of Cr2GeC were measured using diamond anvil cell and synchrotron C radiation at room temperature up to 48 GPa. No phase transformation was observed in the experimental pressure range. The bulk modulus of Cr2GeC calculated using the Birch-Murnaghan equation of state is 169 +/- 3 GPa, with K' = 3.05 +/- 0.15. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：220 / 225

页数：6