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Journal of the Physical Society of Japan | 1980

Magnetic Hyperfine Field at 119Sn in Fe3O4 and γ-Fe2O3

Shigematsu Toshihiko; Torii Hideo; Kiyama Masao; Shinjo Teruya; Takada Toshio

Magnetic hyperfine fields at 119 Sn in ferrimagnetic Fe 3 O 4 and γ-Fe 2 O 3 were measured by means of Mossbauer spectroscopy. The mean values at 4.2 K in Fe 3 O 4 and γ-Fe 2 O 3 were -241 kOe and -115 kOe respectively. The difference is explained by assuming that the transferred hyperfine contributions from A-site Fe 3+ , B-site Fe 3+ and B-site Fe 2+ are -117 kOe/atom, 113 kOe/atom and 40 kOe/atom, respectively.


Journal of the Physical Society of Japan | 1965

The Magnetic Properties of α-Fe2O2 Fine Particles

Bando Yoshichika; Kiyama Masao; Yamamoto Naoichi; Takada Toshio; Shinjo Teruya; Takaki Hideo


Journal of the Physical Society of Japan | 1968

Magnetic Properties of Jarosites, RFe3(OH)6(SO4)2(R=NH4, Na or K)

Takano Mikio; Shinjo Teruya; Kiyama Masao; Takada Toshio


Archive | 1965

Method for preparing raw materials for sintered alloys

Fukatsu Tamotsu; Iwase Keizo; Kasahara Shigenobu; Kiyama Masao; Kusaka Teiji; Takada Toshio; Takatsu Soukichi


Archive | 1984

Flat ba-ferrite fine particle for magnetic recording and manufacture thereof

Nagai Norimichi; Horiishi Nanao; Kiyama Masao; Takada Toshio


Archive | 1981

MANUFACTURE OF TITANIUM DIOXIDE

Okinaka Hideyuki; Horibe Yasutaka; Matsuoka Michio; Iida Yoshio; Kiyama Masao; Takada Toshio


Archive | 1966

METHOD OF PRODUCING SPINEL TYPE FERRITES

Iwase Keizo; Kiyama Masao; Takada Toshio


Archive | 1985

FINE POWDER OF BA FERRITE PLATE PARTICLE FOR MAGNETIC RECORDING USE AND ITS PREPARATION

Nagai Norimichi; Sugita Norio; Horiishi Nanao; Kiyama Masao; Takada Toshio


Archive | 1969

Improvements in or relating to ferrite particles and process for manufacturing same

Iwase Keizo; Takada Toshio; Kiyama Masao


Archive | 1987

FINE PLATE BA FERRITE CORPUSCLE POWDER FOR MAGNETIC RECORDING AND ITS PRODUCTION

Katamoto Tsutomu; Nagai Norimichi; Sugita Norio; Kiyama Masao; Takada Toshio

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