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Persistent URL http://purl.org/net/epubs/work/31339305
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Record Id 31339305
Title Multiferroic Bi0.65La0.35Fe0.5Sc0.5O3 perovskite: Magnetic and thermodynamic properties
Contributors
Abstract Magnetic and thermodynamic properties of polycrystalline multiferroic Bi0.65La0.35Fe0.5Sc0.5O3 synthesized under high-pressure and high-temperature conditions are reported. Magnetic properties were studied using a SQUID magnetometer technique over the temperature range of 5?300 K in magnetic fields up to H=10 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 AFM type with a weak FM contribution occurs below the Néel temperature TN ~237 K. Magnetic hysteresis loops taken below TN show a huge coercive field up to Hc ~10 kOe. A strong effect of magnetic field on the magnetic properties of the compound has been found. Derivative of the initial magnetization curves demonstrates a temperature-dependent anomaly in fields of H=15?25 kOe. Besides, an anomaly of the temperature dependent zero-field cooled magnetization measured in magnetic fields of 6?7 kOe has been found. Origin of both anomalies is associated with inhomogeneous magnetic state of the compound. The heat capacity has been measured from 2 K up to room temperature and a significant contribution from the magnon excitations at low temperatures has been detected. From the low-temperature heat capacity, an anisotropy gap of the magnon modes of the order 3.7 meV and Debye temperature TD=189 K have been determined.
Organisation ISIS , ISIS-WISH , STFC
Keywords
Funding Information European Union Horizon 2020 research and innovation programme (645660); VEGA (1/0145/13); SAIA (15505)
Related Research Object(s):
Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article J Magnetism Magnetic Mater 429 (2017): 177-181. doi:10.1016/j.jmmm.2017.01.037 2017
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