Room-temperature multiferroic and magnetocapacitance effects in M-type hexaferrite BaFe{sub 10.2}Sc{sub 1.8}O{sub 19}

Journal Article · Mon Aug 22 04:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4961615· OSTI ID:22590528

Tang, Rujun; Zhou, Hao; You, Wenlong ^[1]; Yang, Hao ^[2]

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1. Jiangsu Key Laboratory of Thin Films, College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006 (China)
2. College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 211106 (China)

The room-temperature multiferroic and magnetocapacitance (MC) effects of polycrystalline M-type hexaferrite BaFe{sub 10.2}Sc{sub 1.8}O{sub 19} have been investigated. The results show that the magnetic moments of insulating BaFe{sub 10.2}Sc{sub 1.8}O{sub 19} can be manipulated by the electric field at room temperature, indicating the existence of magnetoelectric coupling. Moreover, large MC effects are also observed around the room temperature. A frequency dependence analysis shows that the Maxwell-Wagner type magnetoresistance effect is the dominant mechanism for MC effects at low frequencies. Both the magnetoelectric-type and non-magnetoelectric-type spin-phonon couplings contribute to the MC effects at high frequencies with the former being the dominant mechanism. The above results show that the hexaferrite BaFe{sub 10.2}Sc{sub 1.8}O{sub 19} is a room-temperature multiferroic material that can be potentially used in magnetoelectric devices.

• OSTI ID: 22590528
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 8 Vol. 109; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRIC FIELDS
EQUIPMENT
FERRITES
FREQUENCY DEPENDENCE
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETORESISTANCE
PHONONS
POLYCRYSTALS
POTENTIALS
SPIN
TEMPERATURE RANGE 0273-0400 K