Surface effects in CoFe2O4 magnetic fluids studied by Mossbauer spectrometry
Surface effects in CoFe2O4 magnetic fluids studied by Mossbauer spectrometry
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DOI：
10.1016/s0304-8853(01)01044-7
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发表时间：
2002-04-01
影响因子：
2.7
通讯作者：
Casas, U
中科院分区：
文献类型：
--
作者：
Didukh, P;Greneche, JM;Casas, U
采用零场和场内穆斯堡尔谱法研究了CoFe2O4粒子的磁性。研究包括超顺磁弛豫以及不同粒径铁磁流体和粉末形式样品的表面现象。应用核壳模型估计了粒子周围表面“自旋倾斜”壳层的厚度。(C) 2002 Elsevier Science B.V.版权所有
Magnetic properties of CoFe2O4 particles were investigated by means of zero-field and in-field Mossbauer spectrometry. The studies include superparamagnetic (SP) relaxation as well as the surface phenomena of samples with different particle sizes both in the form of ferrofluids and powders. A core-shell model was applied to estimate the thickness of the surface "spin-canted" shell around particles. (C) 2002 Elsevier Science B.V. All rights reserved.