Magnetic Properties of the Bi0.65La0.35Fe0.5Sc0.5O3 Perovskite


Magnetic properties of polycrystalline multiferroic Bi0.65La0.35Fe0.5Sc0.5O3 synthesized under high-pressure (6 GPa) and high-temperature (1500 K) conditions were studied using a SQUID magnetometer technique. The temperature dependent static magnetic moment M was measured in both zero-field-cooled and field-cooled modes over the temperature range of 5-300 K in low magnetic field H = 0.02 kOe. The field dependent magnetization M(H) was measured in magnetic fields up to 50 kOe at different temperatures up to 230 K after zero-field cooling procedure. A long-range magnetic ordering of the antiferromagnetic type with a weak ferromagnetic contribution takes place below T-N approximate to 220 K. Magnetic hysteresis loops taken below T-N show a huge coercive field up to H-c approximate to 10 kOe, while the magnetic moment does not saturate up to 50 kOe. A strong effect of magnetic field on the magnetic properties of the compound has been found. Below T-N approximate to 220 K the derivatives of the initial magnetization curves demonstrate the existence of a temperature-dependent anomaly in fields of H = 15 divided by 25 kOe. The nature of the anomaly is unknown and requires additional study.

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Fedorchenko, AV; Fertman, EL; Desnenko, VA; Kotlyar, OV; Cizmar, E; Shvartsman, VV; Lupascu, DC; Salamon, S; Wende, H; Salak, AN; Khalyavin, DD; Olekhnovich, NM; Pushkarev, AV; Radyush, YV; Feher, A

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This work was supported by the TUMOCS project. This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 645660. Also this work was supported by the Slovak Grant Agency VEGA 1/0145/13. S. Salamon thanks Stiftung Mercator (MERCUR) for the financial support. We acknowledge enlightening conversations with M.W. Meisel.

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