Synthesis and magnetic properties of Sr1-x (La, AM)x-M type ferrites (AM-Na, K)

Ryo Murakami; Hirofumi Kakuta; Hitoshi Takamura; Terumi Tanaka; Masuo Okada; Masakatsu Fukuda; Masanori Sano; Kimiyuki Kamino

doi:10.2497/jjspm.43.990

Synthesis and magnetic properties of Sr_1-x (La, AM)_x-M type ferrites (AM-Na, K)

Ryo Murakami, Hirofumi Kakuta, Hitoshi Takamura, Terumi Tanaka, Masuo Okada, Masakatsu Fukuda, Masanori Sano, Kimiyuki Kamino

ENG - Materials Science

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The appeared phases and magnetic properties of Sr_1-x(La, AM)_x ferrites (AM = Na, K) were studied. The prepared samples having the nominal composition of (Sr_1-x·(La, AM)_x)O·6Fe₂O₃, contain α-Fe₂O₃ phase and M-type ferrite phase. However the single phase of M-type ferrites with nominal compositions of (Sr_1-x(La_0.5Na_0.5)_x)O· (6-2x)Fe₂O₃ and (Sr_1-x(La_0.7K_0.3) _x)O·(6-x)Fe₂O₃, where x = 0.2 ∼ 0.8, was obtained by the selection of a tie-line composition. The c-axis of M-type ferrites became shoter with increasing x. Their magnetizations, Curie temperatures and anisotropy fields decreased with increasing the amount of substitution of La-AM for Sr.

Original language	English
Pages (from-to)	990-994
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	43
Issue number	8
DOIs	https://doi.org/10.2497/jjspm.43.990
Publication status	Published - 1996 Aug

Keywords

Lanthanum-potassium ferrites
Lanthanum-sodium ferrites
M-type ferrites
Strontium ferrites

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.2497/jjspm.43.990

Cite this

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title = "Synthesis and magnetic properties of Sr1-x (La, AM)x-M type ferrites (AM-Na, K)",

abstract = "The appeared phases and magnetic properties of Sr1-x(La, AM)x ferrites (AM = Na, K) were studied. The prepared samples having the nominal composition of (Sr1-x·(La, AM)x)O·6Fe2O3, contain α-Fe2O3 phase and M-type ferrite phase. However the single phase of M-type ferrites with nominal compositions of (Sr1-x(La0.5Na0.5)x)O· (6-2x)Fe2O3 and (Sr1-x(La0.7K0.3) x)O·(6-x)Fe2O3, where x = 0.2 ∼ 0.8, was obtained by the selection of a tie-line composition. The c-axis of M-type ferrites became shoter with increasing x. Their magnetizations, Curie temperatures and anisotropy fields decreased with increasing the amount of substitution of La-AM for Sr.",

keywords = "Lanthanum-potassium ferrites, Lanthanum-sodium ferrites, M-type ferrites, Strontium ferrites",

author = "Ryo Murakami and Hirofumi Kakuta and Hitoshi Takamura and Terumi Tanaka and Masuo Okada and Masakatsu Fukuda and Masanori Sano and Kimiyuki Kamino",

year = "1996",

month = aug,

doi = "10.2497/jjspm.43.990",

language = "English",

volume = "43",

pages = "990--994",

journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

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TY - JOUR

T1 - Synthesis and magnetic properties of Sr1-x (La, AM)x-M type ferrites (AM-Na, K)

AU - Murakami, Ryo

AU - Kakuta, Hirofumi

AU - Takamura, Hitoshi

AU - Tanaka, Terumi

AU - Okada, Masuo

AU - Fukuda, Masakatsu

AU - Sano, Masanori

AU - Kamino, Kimiyuki

PY - 1996/8

Y1 - 1996/8

N2 - The appeared phases and magnetic properties of Sr1-x(La, AM)x ferrites (AM = Na, K) were studied. The prepared samples having the nominal composition of (Sr1-x·(La, AM)x)O·6Fe2O3, contain α-Fe2O3 phase and M-type ferrite phase. However the single phase of M-type ferrites with nominal compositions of (Sr1-x(La0.5Na0.5)x)O· (6-2x)Fe2O3 and (Sr1-x(La0.7K0.3) x)O·(6-x)Fe2O3, where x = 0.2 ∼ 0.8, was obtained by the selection of a tie-line composition. The c-axis of M-type ferrites became shoter with increasing x. Their magnetizations, Curie temperatures and anisotropy fields decreased with increasing the amount of substitution of La-AM for Sr.

AB - The appeared phases and magnetic properties of Sr1-x(La, AM)x ferrites (AM = Na, K) were studied. The prepared samples having the nominal composition of (Sr1-x·(La, AM)x)O·6Fe2O3, contain α-Fe2O3 phase and M-type ferrite phase. However the single phase of M-type ferrites with nominal compositions of (Sr1-x(La0.5Na0.5)x)O· (6-2x)Fe2O3 and (Sr1-x(La0.7K0.3) x)O·(6-x)Fe2O3, where x = 0.2 ∼ 0.8, was obtained by the selection of a tie-line composition. The c-axis of M-type ferrites became shoter with increasing x. Their magnetizations, Curie temperatures and anisotropy fields decreased with increasing the amount of substitution of La-AM for Sr.

KW - Lanthanum-potassium ferrites

KW - Lanthanum-sodium ferrites

KW - M-type ferrites

KW - Strontium ferrites

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