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

Journal of Advanced Dielectrics

S. N. Krylova¹  A. S. Krylov¹  S. N. Sofronova¹  I. A. Gudim¹  A. N. Vtyurin¹  Rajesh Kumar² 

[1] Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia;Material Research Laboratory, Discipline of Physics & MEMS, Indian Institute of Technology Indore, Simrol 453552, India;

关键词: Multiferroic;    magnetoelastic interaction;    Raman spectra;    phase transition;    magnetic ordering;   

DOI  :  10.1142/S2010135X1850011X

来源: DOAJ

【 摘 要 】

Raman spectra of Ho1−xNdxFe(BO3)4 (x=1, 0.75, 0.5, 0.25) have been studied in temperature range 10–400K. 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 Néel 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.

【 授权许可】

Unknown