Valence of Ti cations and its effect on magnetic properties of spinel ferrites TixM1-xFe2O4 (M = Co, Mn)

Du Y. N.; Xu J.; Li Z. Z.; Tang G. D.; Qian J. J.; Chen M. Y.; Qi W. H.

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Valence of Ti cations and its effect on magnetic properties of spinel ferrites TixM1-xFe2O4 (M = Co, Mn)

机译：Ti阳离子的价值及其对尖晶石铁氧体磁性的影响Tixm1-Xfe2O4（M = Co，Mn）

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Powder samples of TixCo(1-x)Fe(2)O(4) (0.0 = x = 0.4) and TixMn(1-x)Fe(2)O(4) (0.0 = x = 0.3) were synthesized using a conventional method for preparing ceramics. X-ray diffraction analysis confirmed that the samples consisted of a single phase with a cubic (A)[B](2)O-4 spinel structure. The average molecular magnetic moment (mexp) measured at 10 K decreased monotonically with increasing x for two series of samples. According to previous investigations, Ti2+ and Ti3+ cations are present in these ferrites, but there are no Ti4+ cations; the magnetic moments of the Ti2+, Ti3+, and Mn3+ cations are assumed to couple antiferromagnetically with those of the Mn2+, Co2+, Co3+, Fe2+, and Fe3+ cations whenever they are at the (A) or [B] sublattice. The dependence of mexp of the two series of samples on the doping level x was fitted using a quantum-mechanical potential barrier, and the cation distributions in the two series of samples were obtained.

机译：Tixco（1-x）Fe（2）O（4）（0.0 <= 0.4）的粉末样品和Tixmn（1-x）Fe（2）O（4）（0.0＆ = x＆lt 使用常规制备陶瓷的方法合成; = 0.3）。 X射线衍射分析证实，样品由单相，具有立方（A）[B]（2）O-4尖晶石结构。在10 k下测量的平均分子磁矩（MEXP）单调，随着两种样品的增加而单调地减少。根据先前的研究，这些铁氧体中存在Ti2 +和Ti3 +阳离子，但没有Ti4 +阳离子; 假设Ti2 +，Ti3 +和Mn3 +阳离子的磁矩与MN2 +，CO2 +，CO3 +，Fe2 +和Fe3 +阳离子的抗亚铁胺类耦合，每当它们处于（a）或[b]子叶时。使用量子机械潜在屏障拟合在掺杂水平X上的两系列样品的MEXP的依赖性，并获得两种样品中的阳离子分布。

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《RSC Advances》 |2018年第1期|共9页
作者
Du Y. N.; Xu J.; Li Z. Z.; Tang G. D.; Qian J. J.; Chen M. Y.; Qi W. H.;
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Hebei Normal Univ Dept Phys Hebei Adv Thin Film Lab Shijiazhuang 050024 Hebei Peoples R China;

Hebei Normal Univ Dept Phys Hebei Adv Thin Film Lab Shijiazhuang 050024 Hebei Peoples R China;

Hebei Normal Univ Dept Phys Hebei Adv Thin Film Lab Shijiazhuang 050024 Hebei Peoples R China;

Hebei Normal Univ Dept Phys Hebei Adv Thin Film Lab Shijiazhuang 050024 Hebei Peoples R China;

Hebei Normal Univ Dept Phys Hebei Adv Thin Film Lab Shijiazhuang 050024 Hebei Peoples R China;

Hebei Normal Univ Dept Phys Hebei Adv Thin Film Lab Shijiazhuang 050024 Hebei Peoples R China;

Hebei Normal Univ Dept Phys Hebei Adv Thin Film Lab Shijiazhuang 050024 Hebei Peoples R China;

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机译：Ti阳离子的价值及其对尖晶石铁氧体磁性的影响Tixm1-Xfe2O4（M = Co，Mn）
2. Magnetic and M?ssbauer Studies of Mn$_{0.679{-}{rm x}}$ Zn$_{0.256}$ Ti$_{rm x}$ Fe$_{2.066}$ O$_{4}$ Spinel Ferrites: Effect of Cation Distribution [J] . Ji, H., Lan, IEEE Transactions on Magnetics . 2013,第7期

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Valence of Ti cations and its effect on magnetic properties of spinel ferrites TixM1-xFe2O4 (M = Co, Mn)

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