Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5491072 | Journal of Magnetism and Magnetic Materials | 2017 | 6 Pages |
Abstract
We investigated slow relaxations of the magnetostriction and residual magnetostriction of the phase-separated system (Eu1âxGdx)0.6Sr0.4MnO3, in which the metamagnetic transition from a paramagnetic insulating state to a ferromagnetic metallic state is accompanied by a lattice shrinkage. The relaxations are well fitted by a stretched exponential function, suggesting the strong frustration between the double exchange interaction and Jahn-Teller effect. We have revealed that the Gd substitution suppresses the frozen phase-separated phase at low temperatures and stabilizes the paramagnetic insulating state in the dynamic phase-separated phase at intermediate temperatures. The former origin would be the randomness effect and the latter would be the suppression of the double exchange interaction.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Haruka Taniguchi, Daichi Kimura, Michiaki Matsukawa, Tasuku Inomata, Satoru Kobayashi, Shigeki Nimori, Ramanathaan Suryanarayanan,