Jpn. J. Appl. Phys. 17 (1978) pp. 349-354  |Next Article|  |Table of Contents|
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Effects of the Oxygen Nonstoichiometry on the Domain Structure and the Initial Permeability in Mn–Zn Ferrites

Toshikazu Tanaka

(Received September 12, 1977)

An increase in the oxygen content in Mn–Zn ferrites results in, 1) a complicated domain structure, 2) gently sloping temperature dependence of the initial permeability µ_a, 3) decrease in the loss factor tan δ/µ_a, and 4) improved frequency characteristics for µ_a. The initial permeability µ_a at low frequencies either decreases or increases at first and then decreases, with increasing oxygen content, depending on whether the magnetocrystalline anisotropy constant of the ferrite with a low oxygen content is K₁<0 or >0.
The results are discussed in terms of the increases in the internal stress and the resistivity with increasing oxygen content.

URL: http://jjap.jsap.jp/link?JJAP/17/349/
DOI: 10.1143/JJAP.17.349

References | Citing Articles (11)

1. T. Tanaka: Jpn. J. Appl. Phys. 14 (1975) 153[JSAP].
2. T. Tanaka: Jpn. J. Appl. Phys. 14 (1975) 1169[JSAP].
3. T. Tanaka: Jpn. J. Appl. Phys. 14 (1975) 1897[JSAP].
4. P. Beyer: Phys. Status Solidi A 6 (1971) K55.
5. T. Yamada: J. Phys. Soc. Jpn. 38 (1975) 1378.
6. S. Kobayashi, I. Yamagishi, R. Ishii and M. Sugimoto: Proc. Internat. Conf. on Ferrites, Kyoto, 1970, (Univ. of Tokyo Press, Tokyo, 1971) p. 326.
7. T. Tanaka, Y. Shimizu, T. Ito, T. Nagai and T. Yamada: Japan Patent Kokai 51–118096 (1976).
8. S. Ogawa: Jpn. J. Appl. Phys. 6 (1967) 1427[JSAP].
9. T. Tanaka: Japan Patent Kokai 49–62996 (1974).
10. T. Yamada: J. Phys. Soc. Jpn. 35 (1973) 130.
11. J. Smit and H. P. J. Wijin: Ferrites (Philips' Technical Library, 1959) p. 244.
12. S. Chikazumi: Physics of Magnetism (John Wiley and Sons, Inc, New York, 1964) p. 267 and 273.
13. K. Ohta: J. Phys. Soc. Jpn. 18 (1963) 685.