Broadband transverse susceptibility in multiferroic Y-type hexaferrite Ba0.5Sr1.5Co2Fe2O22

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:476

Article

Hernandez-Gomez, P.¹  Martin-Gonzalez, D.¹  Torres, C.¹  Munoz, J. M.¹ 

[1] Univ Valladolid, Dept Elect & Elect, Paseo Belen 7, E-47011 Valladolid, Spain

关键词: Y-type hexaferrites;    Multiferroics;    Transverse susceptibility;    BSFCO;   

DOI  :  10.1016/j.jmmm.2019.01.035

来源: Elsevier

【 摘 要 】

Single phase multiferroics in which ordered magnetism and ferroelectricity coexist, are of great interest for new multifunctional devices, and among them Y-type hexaferrites are good candidates. Transverse susceptibility measurements, which have been proved to be a versatile tool to study singular properties of bulk and nanoparticle magnetic systems, have been carried out with a broadband system on polycrystalline Y type hexaferrites with composition Ba0.5Sr1.5Co2Fe2O22, optimal to exhibit multiferroic properties. In the temperature range 80-350 K transverse susceptibility measurements with DC fields up to +/- 5000 Oe reveal different behaviour depending on the sintering temperature. The thermal evolution of the anisotropy field peak exhibits four regions with different slopes: positive in 80-130 K, negative in 130-200 K, constant in 200-280 K and negative in 280-350 K, which can be considered a signature of spin transitions in this compound.

【 授权许可】

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