Investigations on the Growth and Microhardness Studies of Ga2-xFexO3 Single Crystals

被引：2

作者：

Srimathy, B. ^{[1
]}

Kumar, J. ^{[2
]}

机构：

[1] Indian Inst Handloom Technol, Salem, Tamil Nadu, India

[2] Anna Univ, Crystal Growth Ctr, Chennai, Tamil Nadu, India

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2021年 / 122卷 / 12期

关键词：

ferrites; mechanical properties; microhardness; fracture mechanism; crystal growth; YIELD STRENGTH; MICROINDENTATION; HARDNESS; DEFORMATION;

D O I：

10.1134/S0031918X21120103

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Single crystals of Gallium ferrite Ga2 -xFexO3 (x = 0.8, 1 and 1.2) were grown by optical floating zone technique. X-ray diffraction analysis clearly indicated the manifestation of Vegard's law. Microhardness at a particular load was found to be independent of loading time. Variation with load exhibits a non-linear phenomenon, which is discussed in detail. Microhardness decreases with Fe content due to lattice expansion. Transformation from palmqvist to median cracks was observed in all compositions with increasing load. Mechanical parameters such as crack length, fracture toughness, brittleness index, and yield strength were calculated and their impact on Fe concentrations was discussed.

引用

页码：1234 / 1240

页数：7

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