HELICAL MAGNETIC ORDER AND SPIN SLIPS IN HOLMIUM-YTTRIUM SUPERLATTICES

被引：13

作者：

MCMORROW, DF ^{[1
]}

JEHAN, DA ^{[1
]}

COWLEY, RA ^{[1
]}

SWADDLING, PP ^{[1
]}

WARD, RCC ^{[1
]}

WELLS, MR ^{[1
]}

HAGMANN, N ^{[1
]}

CLAUSEN, KN ^{[1
]}

机构：

[1] RISO NATL LAB,DK-4000 ROSKILDE,DENMARK

来源：

EUROPHYSICS LETTERS | 1993年 / 23卷 / 07期

关键词：

D O I：

10.1209/0295-5075/23/7/010

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The chemical and magnetic structures of a series of Ho/Y superlattices have been studied using X-ray and neutron scattering techniques. The X-ray diffraction results show that the superlattices have a high degree of crystalline order, with sharp interfaces between the two materials. From the neutron scattering the Ho3+ magnetic moments are found to form a basal-plane helic at all temperatures in the ordered phase, with an apparent suppression of the low-temperature cone base. The chirality of the helix is coherently maintained across the yttrium with an effective, temperature-independent turn angle of 51.1(1.5)-degrees. Below almost-equal-to 30 K the Ho3+ moments form commensurate spin-slip structures.

引用

页码：523 / 528

页数：6

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