MOSSBAUER AND MAGNETIC STUDY OF SR(ZNLI0.5FE0.5)FE16O27 HEXAFERRITE

被引：4
作者：
ALBANESE, G
LL, JLS
LOPEZ, G
DIAZ, S
LECCABUE, F
WATTS, BE
机构：
[1] CNR, INST MASPEC, I-43100 PARMA, ITALY
[2] UNIV PARMA, DEPT PHYS, I-43100 PARMA, ITALY
[3] UNIV LA HABANA, FAC FIS, IMRE, HAVANA, CUBA
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1994年 / 137卷 / 03期
关键词：
D O I：
10.1016/0304-8853(94)90717-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A W-type hexagonal ferrite of composition Sr(ZnLi0.5Fe0.5)Fe16O27 has been prepared by ceramic technique using ball milling followed by heat treatment at 1100, 1200 and 1320 degrees C for different times. The samples were examined by thermomagnetic analysis, X-ray diffraction, magnetic and Mossbauer measurements. W-type single-phase compounds were obtained by heating the samples at 1320 degrees C but only polyphase material was obtained after heating to 1100 and 1200 degrees C. The samples treated at 1320 degrees C for 5 h had the best intrinsic magnetic properties: sigma(s) = 89 +/- 1 emu/g, H-A = 13.8 kOe and T-C = 432 degrees C. The Mossbauer spectra give evidence of a magnetic order, in agreement with a hypothesis of selective occupation by Zn2+ and Li+ cations of the tetrahedral and octahedral spin-down sublattices, respectively.
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收藏
页码：313 / 321
页数：9
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