Composition-control of Mn-Zn Ferrite Single Crystal Using a Phase Diagram

Je, Hae-June; 제해준; Kim, In-Tae; 김인태; Hong, Kug-Sun; 홍국선

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P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

e-Submission

Vol.5, No.3

PubReader Citation

Composition-control of Mn-Zn Ferrite Single Crystal Using a Phase Diagram

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

1992, v.5 no.3, pp.327-332

Je, Hae-June
Kim, In-Tae
Hong, Kug-Sun

Je, H., Kim, I., & Hong, K. (1992). Composition-control of Mn-Zn Ferrite Single Crystal Using a Phase Diagram. , 5(3), 327-332.

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Abstract

Mn-Zn ferrite single crystals show some fluctuations in composition along the direction of growth by the conventional Bridgman method. The single crystal with a uniform composition was obtained by maintaining the liquid composition content. For example, two batches of powder were prepared : one is consisted of 52 mol% of $Fe_2O_3$, 30 mol% of MnO, and 18 mol% Zn(Composition A), and the other 53 mol% of $Fe_2O_3$, 28.5 mol% of MnO, and 18.5 mol% ZnO(Composition B). Crack-free single crystals with the uniform composition B were grown in a size of 60mm diameter, 300mm long by melting the pellets of composition A and followed by supplying the composition B as tablets. Initial permeabilities were obtained above 600 at 5 MHz in the region of 30~270 mm along the direction of growth.