Manifestation of magnetoelastic interactions in Raman spectra of HoxNd1-xFe3(BO3)(4) crystals

被引：22

作者：

Krylov, A. S. ^{[1
]}

Sofronova, S. N. ^{[1
]}

Gudim, I. A. ^{[1
]}

Krylova, S. N. ^{[1
]}

Kumar, Rajesh ^{[2
,3
]}

Vtyurin, A. N. ^{[1
]}

机构：

[1] Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia

[2] Indian Inst Technol Indore, Discipline Phys, Mat Res Lab, Simrol 453552, India

[3] Indian Inst Technol Indore, MEMS, Simrol 453552, India

来源：

JOURNAL OF ADVANCED DIELECTRICS | 2018年 / 8卷 / 02期

关键词：

Multiferroic; magnetoelastic interaction; Raman spectra; phase transition; magnetic ordering;

D O I：

10.1142/S2010135X1850011X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Raman spectra of HoxNd1-xFe3(BO3)(4) (x = 1, 0.75, 0.5, 0.25) have been studied in temperature range 10-400 K. Two compositions (x = 1, x = 0: 75) demonstrate structural phase transition with soft mode restoration. The addition of Nd atoms increases interatomic spacing and decreases the temperature of structural phase transition. The solid solutions (x = 0: 75, 0.5, 0.25) demonstrate the emergence of the peaks corresponding to magnetoelastic interaction below Neel temperature. The order parameter of the magnetic phase transition has been determined. The equal concentrations of holmium and neodymium atoms prevent magnon soft modes condensation caused by exchange interactions in Fe-O-Fe chains are observed. Calculations confirm the data obtained in the experiment.

引用

页数：10

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