Magnetic properties of La-Co substituted M-type strontium hexaferrites prepared by polymerizable complex method

Takeyuki Kikuchi, Tatsuya Nakamura, Tohru Yamasaki, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yasunori Ikeda

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Magnetic properties of La-Co substituted M-type strontium hexaferrites were studied. The samples were prepared by polymerizable complex method. Crystal structure of samples has been investigated by powder X-ray diffraction (XRD). Single-phase M-type strontium hexaferrites with chemical composition of Sr1.05-xLaxFe12-xCoxO19 (x=0-0.4) were formed by heating at 1173 K for 24 h in air. Magnetic properties were discussed by measurements of M-H curves with vibrating sample magnetometer (VSM). La-Co substituted M-type strontium hexaferrites prepared by polymerizable complex method showed typical magnetic hysteresis of hard ferrite. The coercive force increased significantly by La-Co substitution with polymerizable complex method. Maximum coercive force achieved in this study is 8.0 kOe (640 kA/m). Scanning electron microscopy revealed that the prepared ferrite particles have plate-like shape of diameter range between 20 and 500 nm.

Original languageEnglish
Pages (from-to)2381-2385
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume322
Issue number16
DOIs
Publication statusPublished - Aug 1 2010

Keywords

  • La-Co substitution
  • M-type strontium hexaferrite
  • Polymerizable complex method

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Magnetic properties of La-Co substituted M-type strontium hexaferrites prepared by polymerizable complex method'. Together they form a unique fingerprint.

  • Cite this