High-Pressure Studies on Synthetic Orthorhombic Cubanite (CuFe2S3)

被引：1

作者：

Chandra, Usha ^{[1
]}

Singh, Nihal ^{[1
]}

Sharma, Pooja ^{[1
]}

Parthasarathy, G. ^{[2
]}

机构：

[1] Univ Rajasthan, Dept Phys, High Pressure Phys Lab, Jaipur 302055, Rajasthan, India

[2] Natl Geophys Res Inst CSIR, Hyderabad 500066, Andhra Pradesh, India

来源：

SOLID STATE PHYSICS: PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010, PTS A AND B | 2011年 / 1349卷

关键词：

Cubanite; Microwave heating; High-; Pressure; Electrical Resistivity; Differential Thermal Analysis (DTA); TRANSITION;

D O I：

10.1063/1.3605778

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report here the successful synthesis of orthorhombic cubanite using microwave heating and characterization for its orthorhombic phase by powder X-ray diffraction, Micro-Raman, Thermal and high pressure electrical resistivity measurements. The unique physico-chemical conditions prevent successful synthesis under laboratory conditions, however the mineral occurs in nature in its orthorhombic form. A distinct endothermic dip in Differential Thermal Analysis (DTA) at 280 degrees C is in agreement with the DTA data reported for natural cubanite. An irreversible first order phase transformation from orthorhombic to NiAs structure is seen at 4GPa /200 degrees C. High pressure electrical resistivity and micro-Raman spectroscopic measurements on the synthetic sample exhibit transformation to isocubanite.

引用

页码：143 / +

页数：2

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