Preparation and characterization of Z-type hexaferrites, Ba3(1−x)Sr3xCo2Fe24O41 with x = 0–0.5, via a two-step calcination with an intermediate wet milling View Full Text


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Article Info

DATE

2006-09

AUTHORS

M. Aoyama, J. Temuujin, M. Senna, T. Masuko, C. Ando, H. Kishi

ABSTRACT

Z-type hexaferrites (Ba3(1 − x)Sr3xCo2Fe24O41with x = 0–0.5, Z-hex) were prepared in a nearly phase pure state by a two-step calcination with an intermediate wet milling. The first calcination of the starting mixture comprising oxides or hydroxides at temperatures below 1100∘C brought about a mixture of layer-structured M and Y-type hexaferrite phases, together with a spinel phase of Co ferrite. Z-hex was fully crystallized after the second calcination up to 1230∘C. Wet milling between the two calcination steps was decisive for the phase purity. Emphasis was laid on the quantitative analyses of Z-hex, together with the evaluation of anisotropic growth of the crystallites. Sr addition stabilizes Z-hex, while decreases degree of anisotropy simultaneously. More... »

PAGES

61-64

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10832-006-9937-6

DOI

http://dx.doi.org/10.1007/s10832-006-9937-6

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1032038447


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