Magnetic properties of Al2O3-Cr2O3 solid solutions |
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| Authors: | SH YangSJ Liu ZH HuaSG Yang |
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| Affiliation: | a National Laboratory of Microstructure and Department of Physics, Nanjing University, Nanjing 210093, China
b College of Physics and Electronic Information, Luoyang Normal College, Luoyang 471022, China |
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| Abstract: | Solid solution ceramics (Al2O3)x(Cr2O3)1−x with different x in the range of 0 < x < 1 were synthesized via traditional ceramic production method. X-ray diffraction results and Rietveld refinements indicated that all samples possessed rhomb-centered structure and continuous solid solutions were synthesized. The samples were composed of irregular grains with several micrometers in diameter. Temperature dependence of magnetization measurements showed monotonous decreasing Néel temperature with increasing x and percolation effect happened with threshold of x = 0.65. As x became higher, weak ferromagnetism was observed in the samples. Field dependence of magnetization measurements further confirmed the weak ferromagnetism in the samples with x = 0.7, 0.8 and 0.9. |
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| Keywords: | Solid solution Cr2O3 Né el temperature SQUID XRD |
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