Evolution of magnetoresistance behaviour at low temperatures in naturally oxidised specular spin valve systems

Sreevidya, PV and Borole, UP and Gawade, T and Khan, Jakeer and Prajapat, C.L. and Kumar, Y and Barshilia, Harish C and Chowdhury, P (2019) Evolution of magnetoresistance behaviour at low temperatures in naturally oxidised specular spin valve systems. Journal of Magnetism and Magnetic Materials, 481. pp. 170-175. ISSN 03048853

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Abstract

The temperature dependent magnetoresistive behaviour of field cooled naturally oxidised specular spin valve systems has been studied in the temperature range of 300–10 K. Inconsistent to the non-specular spin valve system, an anomalous behaviour was evolved with large exchange bias and higher coercivity, below 200 K. The structural investigations inferred the formation of magnetic oxides with higher density gradient in the pinned layer, and the observed anomalous behaviour at low temperatures was correlated with the antiferromagnetic ordering of these oxides in spin glass state. The uncompensated interfacial magnetism of the nano-oxide layer was further confirmed by comparing with low temperature magnetoresistive behaviour of non-magnetic oxide based specular spin valve systems.

Item Type: Article
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
CHEMISTRY AND MATERIALS > Composite Materials
CHEMISTRY AND MATERIALS > Metals and Metallic Materials
Depositing User: Mrs SK Pratibha
Date Deposited: 23 Nov 2021 11:38
Last Modified: 23 Nov 2021 11:38
URI: http://nal-ir.nal.res.in/id/eprint/13388

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