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Journal articles
Spin-lattice coupling in multiferroic Pb (Fe1/2Nb 1/2)O3 thin films
Abstract : We made magnetization and x-ray diffraction measurements on an epitaxial Pb(Fe1/2Nb1/2)O3 200 nm film. From the temperature dependence of the out-of-plane lattice parameter, we can assign a Burns’ temperature at Td∼640 K, a temperature at T*∼510 K (related to the appearance of static polar nanoregions), and an anomaly occurring at 200 K. The latter is precisely the Néel temperature TN determined from magnetization and points to spin-lattice coupling at TN∼200 K. We also observe “weak ferromagnetism” up to 300 K and propose superantiferromagnetic clusters as a plausible scenario to explain this hysteresis above TN.
Cited literature [29 references]
https://hal-centralesupelec.archives-ouvertes.fr/hal-02269652
Contributor : Amandine Lustrement <>
Submitted on : Friday, August 28, 2020 - 11:02:36 AM
Last modification on : Monday, August 31, 2020 - 10:08:04 AM
Contributor : Amandine Lustrement <>
Submitted on : Friday, August 28, 2020 - 11:02:36 AM
Last modification on : Monday, August 31, 2020 - 10:08:04 AM
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