Texture and self-biased property of an oriented M-type barium ferrite thick film by tape casting

• Published in: Chinese physics B Vol. 21; no. 6; pp. 490 - 493
• Main Author: 陈大明 刘颖力 李元勋 杨楷 张怀武
• Format: Journal Article
• Language: English
• Published: 01.06.2012
• Subjects: Barium compounds; Coercive force; Devices; Ferrites; Magnetization; Surface layer; Tape casting; Texture; Thick films; X射线衍射; 厚膜; 导向; 流延成型; 纹理; 自偏置; 财产; 钡铁氧体薄膜
• ISSN: 1674-1056; 2058-3834; 1741-4199
• DOI: 10.1088/1674-1056/21/6/067502

In this paper, the oriented M-type barium ferrite （BaM） thick films with different thicknesses are prepared by tape casting. It is found that the crystallographic alignment degree （f）, the pore and the squareness ratio （Mr/Ms） are not affected by the thickness of the film. XRD and SEM results show that the thick film has hexagonal morphology with a crystal texture of c-axis grains perpendicular to film plane. The hysteresis curve indicates that the BaM thick film exhibits a self-biased property with a remanent magnetization of 3.30 T, a squareness ratio （Mr/Ms） of 0.81, and a coercivity of 0.40 T. The results show that the BaM thick film has potential for use in self-biasing microwave devices, and also proves that the tape casting technique is capable of fabricating high-quality barium ferrite films, thus providing a unique opportunity to realize the large area production of thick film.