Plutonium chalcogenides and pnictides: pressure induced phase transition and elastic properties

被引：46
作者：
Srivastava, V [1 ]
Sanyal, SP [1 ]
机构：
[1] Barkatullah Univ, Dept Phys, Condensed Matter Phys Lab, Bhopal 462026, India
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 366卷 / 1-2期
关键词：
plutonium compounds; high pressure; phase transition; elastic properties;
D O I：
10.1016/S0925-8388(03)00692-3
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：
We have investigated the structural and elastic properties of three plutonium mono-chalcogenides (PuX; X = S, Se, Te) and three mono-pnictides (PuY; Y = As, Sb, Bi) using an interionic potential theory with modified ionic charge, at high pressure. This method has been found quite satisfactory in the case of cerium mono-chalcogenides and mono-pnictides. The calculated equation of state, phase transition pressure, and bulk modulus agree well with the experimental findings. We have also reported the second order elastic constants (SOEC) for these Pu compounds, for the first time. A comparison of the properties of chalcogenides and pnictides of shifted homolog pair Ce-Pu, is also presented. (C) 2003 Elsevier B.V. All rights reserved.
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页码：15 / 20
页数：6
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