Investigation of Helimagnetism in Dy and Ho Thin Films by Neutron Reflectometry

被引：5

作者：

Devyaterikov, D. I. ^{[1
]}

Kravtsov, E. A. ^{[1
,2
]}

Proglyado, V. V. ^{[1
]}

Zhaketov, V. D. ^{[3
]}

Nikitenko, Yu. V. ^{[3
]}

机构：

[1] Russian Acad Sci, Ural Branch, Inst Met Phys, Ekaterinburg 620108, Russia

[2] Ural Fed Univ, Ekaterinburg 620002, Russia

[3] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Russia

来源：

JOURNAL OF SURFACE INVESTIGATION | 2021年 / 15卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

rare-earth metals; dysprosium; holmium; neutron reflectometry; magnetic ordering; MAGNETIC PHASE-DIAGRAM; HOLMIUM;

D O I：

10.1134/S102745102103023X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper, the results of investigating thin films of rare-earth helimagnetics (REMs) Dy and Ho by polarized neutron reflectometry are presented. It is shown that the growth by magnetron sputtering of rareearth structures on sapphire substrates with a buffer layer Nb [1 (1) over bar 02] Al2O3 parallel to[110]Nb parallel to[0001]R leads to complete relaxation of the Nb crystal lattices and the rare-earth film. It is found that some magnetic phase transitions typical of bulk Dy and Ho are not observed in 200 nm [0001]R thin films or are observed in a modified form. Differences between the Neel and Curie temperatures of thin REM films compared to bulk REMs are determined based on polarized-neutron-reflectometry data and measurements of the temperature dependence of the magnetization in the sample plane.

引用

页码：542 / 548

页数：7

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