Magnetic properties of the Bi0.65La0.35Fe0.5Sc0.5O3 perovskite

• Autor(a) principal: Fedorchenko, A.V.
• Data de Publicação: 2017
• Outros Autores: Fertman, E.L., Desnenko, V.A., Kotlyar, O.V., Čižmár, E., Shvartsman, V.V., Lupascu, D.C., Salamon, S., Wende, H., Salak, A.N., Khalyavin, D.D., Olekhnovich, N.M., Pushkarev, A.V., Radyush, Yu.V., Feher, A.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/25396
• topic: High'pressure synthesis; Perovskite; Multiferroic

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 TN ≈ 220 K. Magnetic hysteresis loops taken below TN show a huge coercive field up to Hc ≈ 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 TN ≈ 220 K the derivatives of the initial magnetization curves demonstrate the existence of a temperature-dependent anomaly in fields of H = 15÷25 kOe. The nature of the anomaly is unknown and requires additional study.