Effect of Zn2+ on structure, magnetic properties and thermomagnetic effect of MnZn ferrites

Lin Zhang, De Ping Wang, Ai Hua Yao, Wen Hai Huang, Koji Ioku

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

MnZn ferrite nanoparticles were prepared by using sol-gel auto-combustion method. The effect of Zn2+ on structure, magnetic properties and thermomagnetic effect were investigated with transmission electron microscope (TEM), X-ray diffractometer (XRD) and vibration sample magnetism analysis system (VSM), etc. The results show that Zn2+ has great influence on structure and property of MnZn ferrite. Among the samples prepared, Mn0.8Zn0.2Fe2O4 possessed the maximal saturation magnetization Ms and thermomagnetic effect. 10 mg these samples led the 1 mL deionized water increase 32°C in 20min under a 60kHz alternating magnetic field, showing the sufficient heating ability. Furthermore, the thermomagnetic effect of MnZn ferrite was adjustable by adjusting Zn2+ content. When the Zn2+ content increases, the coercive force Hc and remnant magnetization Br reduce, but the saturation magnetization Ms increases first and reduces subsequently, the maximal Ms to be obtained while the Zn2+ content is 0.2, the utmost value is up to 44.6 (A · m2)/kg.

Original languageEnglish
Pages (from-to)1085-1088
Number of pages4
JournalGongneng Cailiao/Journal of Functional Materials
Volume38
Issue number7
Publication statusPublished - 2007 Jul 1
Externally publishedYes

Keywords

  • Magnetic property
  • MnZn ferrite
  • Sol-gel auto-combustion
  • Thermomagnetic effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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