A Mössbauer spectroscopy and x-ray diffractometry study of Fe1.429-xNixAl1.143Si0.143O4 spinel ferrites
A Mössbauer spectroscopy and x-ray diffractometry study of Fe1.429-xNixAl1.143Si0.143O4 spinel ferrites
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Fe1.429-xNixAl1.143Si0.143O4 尖晶石铁氧体的穆斯堡尔谱和 X 射线衍射研究
DOI：
10.1088/0953-8984/4/42/013
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
Woong
中科院分区：
文献类型：
--
作者：
Sung Ho Lee;Woong
用X射线衍射和穆斯堡尔谱研究了Fe_（1.429-x）Ni_xAl_（1.143）Si_（0.143）O_4尖晶石铁氧体的晶体结构和磁性。当x ≥ 0.286时，晶体结构为立方相;当x<0.286时，晶体结构为混合相。从立方相的穆斯堡尔谱表明，铁离子具有3+的电荷状态和Ni 3+离子存在于四面体网站。由于磁场的分布和四面体和八面体位置之间的强Al-Fe离子混合，穆斯堡尔谱的线加宽已被观察到。
The crystal structure and the magnetic properties of the Fe1.429-xNixAl1.143 Si0.143O4 spinel ferrites have been investigated by means of X-ray diffractometry and Mossbauer spectroscopy. The crystal structures are found to be cubic phase for x>or=0.286 and mixed phase for x<0.286. The Mossbauer spectra from cubic phases suggest that iron ions have the charge state of 3+ and that Ni3+ ions are present at tetrahedral sites. Line broadening of Mossbauer spectra due to the distribution of magnetic fields and a strong Al-Fe ion mixing between tetrahedral and octahedral sites have been observed.