Transformations of magnetic phase diagram as a result of insertion of hydrogen and nitrogen atoms in crystalline lattice of RFe11Ti compounds

Transformations of magnetic phase diagram as a result of insertion of hydrogen and nitrogen atoms in crystalline lattice of RFe11Ti compounds
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DOI:
10.1016/s0925-8388(00)01434-1
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发表时间:
2001-03-02
影响因子:
6.2
通讯作者:
Salamova, AA
Salamova, AA
中科院分区:
材料科学2区
文献类型:
--
作者:
Nikitin, SA;Tereshina, IS;Salamova, AA

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研究了氢和氮的插入对RFe_(11)Ti化合物的磁各向异性和自旋重取向转变的影响。所得到的结果进行了讨论的基础上的模型考虑到的四极矩的4f稀土离子壳层与电场梯度产生的不仅是由周围原子的电荷,但可能是由稀土离子的价壳层和传导电子密度的状态的重新分配。Tt示出,氢和氮原子插入到稀土化合物的晶格中提供了对磁各向异性常数的大小和符号的控制。(C)2001 Elsevier Science BN:保留所有权利。
The effect of hydrogen and nitrogen insertions on the magnetic anisotropy and spin-reorientation transitions of RFe11Ti compounds have been studied. The obtained results are discussed on the basis of a model taking into account the interaction of the quadrupolar moment of the 4f rare earth ion shell with the electric field gradient produced not only by the charges of the ambient atom, but probably by the redistribution of states in the valence shells of the rare-earth ions and the conduction electron density. Tt is shown that the insertion of hydrogen and nitrogen atoms into the crystalline lattice of rare earth compounds provides control of both magnitude and sign of the magnetic anisotropy constants. (C) 2001 Elsevier Science BN: All rights reserved.