Magnetization of cadmium ferrite prepared by coprecipitation

M. Yokoyama, Tetsuya Sato, E. Ohta, T. Sato

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

We investigated the magnetization of the ultrafine cadmium ferrite particles formed during the coprecipitation method and discussed the origin of enhanced magnetization based on the magnetic properties. A transmission electron microscopy micrograph shows aggregation of fine particles having two kinds of shapes, fibrous and granular. X-ray diffraction patterns of the specimens prepared by the coprecipitation method are composed of peaks corresponding to CdFe2O4, Cd(OH)2, and α-FeO(OH). The pattern indicates that the peaks of CdFe2O4 are fairly broad, suggesting the formation of a very small crystallite, with an average size of ∼8 nm. The ultrafine CdFe2O4 particles exhibit ferromagnetic behavior and have a net magnetization of 89±5 emu/g at 6 K. These results suggest that there must be many ferromagnetic clusters consisting of Fe3+ ions at the B sites around Fe3+ ions at the A site by the A-B interactions. Thus, such a change in the distribution of Fe3+ ions in the ultrafine CdFe2O4 particles results in increasing magnetization with decreasing particle size.

Original languageEnglish
Pages (from-to)1015-1019
Number of pages5
JournalJournal of Applied Physics
Volume80
Issue number2
Publication statusPublished - 1996 Jul 15

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cadmium
ferrites
magnetization
ions
diffraction patterns
magnetic properties
transmission electron microscopy
x rays
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Yokoyama, M., Sato, T., Ohta, E., & Sato, T. (1996). Magnetization of cadmium ferrite prepared by coprecipitation. Journal of Applied Physics, 80(2), 1015-1019.

Magnetization of cadmium ferrite prepared by coprecipitation. / Yokoyama, M.; Sato, Tetsuya; Ohta, E.; Sato, T.

In: Journal of Applied Physics, Vol. 80, No. 2, 15.07.1996, p. 1015-1019.

Research output: Contribution to journalArticle

Yokoyama, M, Sato, T, Ohta, E & Sato, T 1996, 'Magnetization of cadmium ferrite prepared by coprecipitation', Journal of Applied Physics, vol. 80, no. 2, pp. 1015-1019.
Yokoyama, M. ; Sato, Tetsuya ; Ohta, E. ; Sato, T. / Magnetization of cadmium ferrite prepared by coprecipitation. In: Journal of Applied Physics. 1996 ; Vol. 80, No. 2. pp. 1015-1019.
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