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Magnetic Properties of the Bi_{0.65}La_{0.35}Fe_{0.5}Sc_{0.5}O₃ Perovskite

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Fedorchenko A., Fertman E., Desnenko V., Kotlyar O., Čižmár E., Shvartsman V., Lupascu D., Salamon S., Wende H., Salak A., Khalyavin D., Olekhnovich N., Pushkarev A., Radyush Y., Feher A.

Acta Physica Polonica A

2017

vol. 131

issue 4

1069-1071

Magnetic properties of polycrystalline multiferroic Bi_{0.65}La_{0.35}Fe_{0.5}Sc_{0.5}O₃ 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} ≈ 220 K. Magnetic hysteresis loops taken below T_{N} show a huge coercive field up to H_{c} ≈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} ≈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.

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1 Acta Physica Polonica A

1 2017

1 Desnenko V.

1 Fedorchenko A.

1 Feher A.

1 Fertman E.

1 Khalyavin D.

1 Kotlyar O.

1 Lupascu D.

1 Olekhnovich N.

1 Pushkarev A.

1 Radyush Y.

1 Salak A.

1 Salamon S.

1 Shvartsman V.

1 Wende H.

1 Čižmár E.

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Magnetic Properties of the Bi_{0.65}La_{0.35}Fe_{0.5}Sc_{0.5}O₃ Perovskite