High pressure Raman spectroscopy of ferrite MgFe2O4

被引：189

作者：

Wang, ZW

Lazor, P

Saxena, SK

O'Neill, HS

机构：

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

[2] Uppsala Univ, Inst Earth Sci, S-75236 Uppsala, Sweden

[3] Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia

来源：

MATERIALS RESEARCH BULLETIN | 2002年 / 37卷 / 09期

基金：

美国国家科学基金会;

关键词：

inorganic compound; high pressure; Raman spectroscopy; phase transformation;

D O I：

10.1016/S0025-5408(02)00819-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An in situ Raman spectroscopic study was conducted to explore the pressure-induced phase transformation of ferrite MgFe2O4 to 51.6 GPa. Results indicate that MgFe2O4 transforms to a high pressure polymorphism at a pressure of 27.7 GPa, which was assigned to an orthorhombic structure. Upon release of pressure to ambient conditions, this high pressure polymorphism of MgFe2O4 remains stable. The crystallization of high pressure phase of MgFe2O4 is dominated by a diffusionless crystallizing mechanism. (C) 2002 Elsevier Science Ltd. All rights reserved.

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页码：1589 / 1602

页数：14

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