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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,
H., Kim,
I., &
Hong,
K.
(1992). Composition-control of Mn-Zn Ferrite Single Crystal Using a Phase Diagram. Analytical Science and Technology, 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 <TEX>$Fe_2O_3$</TEX>, 30 mol% of MnO, and 18 mol% Zn(Composition A), and the other 53 mol% of <TEX>$Fe_2O_3$</TEX>, 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.
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- Mn-Zn ferritic, single crystal
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