Interplay of Fe and Tm moments through the spin-reorientation transition in TmFeO3

被引：16

作者：

Staub, U. ^{[1
]}

Rettig, L. ^{[1
,5
]}

Bothschafter, E. M. ^{[1
]}

Windsor, Y. W. ^{[1
,5
]}

Ramakrishnan, M. ^{[1
]}

Avula, S. R. V. ^{[1
]}

Dreiser, J. ^{[1
]}

Piamonteze, C. ^{[1
]}

Scagnoli, V. ^{[2
,3
]}

Mukherjee, S. ^{[4
]}

Niedermayer, C. ^{[4
]}

Medarde, M. ^{[3
]}

Pomjakushina, E. ^{[3
]}

机构：

[1] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

[2] ETH, Dept Mat, Lab Mesoscop Syst, CH-8093 Zurich, Switzerland

[3] Paul Scherrer Inst, Lab Multiscale Mat Expt, CH-5232 Villigen, Switzerland

[4] Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland

[5] Fritz Haber Inst Max Planck Soc, Dept Phys Chem, Faradayweg 4-6, D-14915 Berlin, Germany

来源：

PHYSICAL REVIEW B | 2017年 / 96卷 / 17期

基金：

瑞士国家科学基金会;

关键词：

DIFFRACTION; DICHROISM;

D O I：

10.1103/PhysRevB.96.174408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

X-ray magnetic circular dichroism (XMCD) and x-ray magnetic linear dichroism (XMLD) have been used to investigate the Fe magnetic response during the spin-reorientation transition (SRT) in TmFeO3. Comparing the Fe XMLD results with neutron-diffraction and magnetization measurements on the same sample indicates that the SRT has an enhanced temperature range in the near surface region of approximately 82 to 120 K compared to approximately 82 to 92 K in bulk. This view is supported by complementary resonant soft x-ray-diffraction experiments at the Tm M-5 edge. These measurements find an induced magnetic moment on the Tm sites, which is well described by a dipolar mean-field model originating from the Fe moments. Even though such a model can describe the 4f response in the experiments, it is insufficient to describe the SRT even when considering a change in the 4f anisotropy. Moreover, the results of the Fe XMCD show a different temperature evolution through the SRT, the interpretation of which is hampered by additional spectral shape changes of the XCMD signal.

引用

页数：11

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