Two state coercivity driven by phase coexistence in vanadium sesquioxide/nickel bulk hybrid material

We developed a bulk hybrid material consisting of a vanadium sesquioxide (V2O3) matrix with nickel (Ni) rich inclusions that exhibit a switchable two-state magnetic coercivity. The V2O3 matrix magnetoelastically couples with the Ni-rich inclusions and its structural phase transition causes two possi...

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Bibliographic Details
Published in:Applied physics letters 2016-09, Vol.109 (11)
Main Authors: Urban, C., Quesada, A., Saerbeck, T., Garcia, M. A., de la Rubia, M. A., Valmianski, I., Fernández, J. F., Schuller, I. K.
Format: Article
Language:English
Subjects:
Applied physics
Coercivity
Ferromagnetic materials
Inclusions
Magnetoelastic effect
Nickel
Phase transitions
Vanadium oxides
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Summary:We developed a bulk hybrid material consisting of a vanadium sesquioxide (V2O3) matrix with nickel (Ni) rich inclusions that exhibit a switchable two-state magnetic coercivity. The V2O3 matrix magnetoelastically couples with the Ni-rich inclusions and its structural phase transition causes two possible magnetic coercivity states. Differences of up to 13% in the temperature window of 14 K are observed, depending whether the transition occurs from rhombohedral to monoclinic or vice versa. These findings provide a pathway for the development of bulk switchable coercivity materials. We present routes to further enhance the magnetoelastic effect by increasing the oxide/ferromagnetic material coupling.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4962155