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Journal articles
Exchange bias effect in CaMn1-xRexO3
Abstract : Exchange bias effect in CaMn1-xRexO3 (x <= 0.1) has been investigated. The effect is very small in the samples doped at x = 0.02 and 0.04, but increases monotonously with further increase in Re doping. For x = 0.1, both vertical and horizontal shifts in hysteresis loop of field cooled sample decrease monotonously with increasing temperature and vanish above 70 K, while coercivity disappears only above 90 K upon approaching the N ' eel temperature. Exchange bias field, coercivity, and remanence asymmetry depend sensitively on temperature and maximal measuring field. Magnetic training effect has been studied for x = 0.06, 0.08, 0.1 samples and analyzed using a spin relaxation model. The observed exchange bias is attributed to the low-temperature phase separation into ferromagnetic clusters and the G-type and/or C-type antiferromagnetic matrix.
Keywords :
Magnetism and Magnetic Materials
https://hal-normandie-univ.archives-ouvertes.fr/hal-02175451
Contributor : Elisabeth VAN T HOF Connect in order to contact the contributor
Submitted on : Wednesday, June 1, 2022 - 4:54:48 PM
Last modification on : Wednesday, June 15, 2022 - 3:18:24 AM
Contributor : Elisabeth VAN T HOF Connect in order to contact the contributor
Submitted on : Wednesday, June 1, 2022 - 4:54:48 PM
Last modification on : Wednesday, June 15, 2022 - 3:18:24 AM
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