Mossbauer study of ε-Al_xFe_<2-x>O_3 nanomagnets

Mossbauer study of ε-Al_xFe_<2-x>O_3 nanomagnets
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ε-Al_xFe_<2-x>O_3纳米磁体的穆斯堡尔研究

DOI:
10.1007/s10751-011-0442-1
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发表时间:
2012
期刊:
Hyperfine interaction
影响因子:
--
通讯作者:
S.Ohkoshi
S.Ohkoshi
中科院分区:
--
文献类型:
--
作者:
K.Yamada;H.Tokoro;M.Yoshikiyo;T.Yorinaga;A.Namai;S.Ohkoshi

文献摘要

相似文献

利用57 Fe穆斯堡尔谱学研究了一系列Al 3+掺杂的ε-Fe 2 O3纳米磁体ε-AlxFe 2 − xO 3(x= 0,0.21,0.40)的矫顽力。穆斯堡尔谱中的超精细场和吸收系数随x的变化而变化。这些行为可以用Al ~(3+)离子对Fe ~(3+)离子的选择性置换来解释。这是首次报道金属取代的ε-Fe_2 O_3的穆斯堡尔谱。
A series of Al3 +-substituted ε-Fe2O3nanomagnets, ε-AlxFe2 −xO3(x= 0, 0.21, 0.40), with large coercive field values was studied by57Fe Mössbauer spectroscopy. The hyperfine field and absorption coefficient in the Mössbauer spectra changed withx. These behaviors can be explained by the selective replacement of Fe3 +ions with Al3 +ions. This is the first report on the Mössbauer spectra of metal-substituted ε-Fe2O3.