Magnetic Properties of the Bi0.65La0.35Fe0.5Sc0.5O3 Perovskite
A.V. Fedorchenkoa,b, E.L. Fertman b, V.A. Desnenko b, O.V. Kotlyar b, E. Čižmár a, V.V. Shvartsman c, D.C. Lupascu c, S. Salamon d, H. Wende d, A.N. Salak e, D.D. Khalyavin f, N.M. Olekhnovich g, A.V. Pushkarev g, Yu.V. Radyush g, and A. Feher a
aInstitute of Physics, Faculty of Sciences, P.J. Safarik University, Park Angelinum 9, 041 54 Košice, Slovakia
bB. Verkin Institute for Low Temperature Physics and Engineering of NASU, Kharkov 61103, Ukraine
cInstitute for Materials Science and CENIDE, University of Duisburg-Essen, Essen 45141, Germany
dFaculty of Physics and CENIDE, University of Duisburg-Essen, Duisburg 47048, Germany
eUniversity of Aveiro (CICECO), Aveiro 3810-193, Portugal
fSTFC, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, United Kingdom
gScientific-Practical Materials Research Centre of NASB, Minsk 220072, Belarus
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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.

DOI: 10.12693/APhysPolA.131.1069
PACS numbers: 75.85.+t, 75.60.Ej, 75.60.-d, 75.50.Ee