ORIGIN OF THE 2ND LENGTH SCALE ABOVE THE MAGNETIC-SPIRAL PHASE OF TB

被引：70

作者：

GEHRING, PM ^{[1
]}

HIROTA, K ^{[1
]}

MAJKRZAK, CF ^{[1
]}

SHIRANE, G ^{[1
]}

机构：

[1] BROOKHAVEN NATL LAB,UPTON,NY 11973

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.71.1087

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High q-resolution neutron-scattering measurements of the critical scattering in Tb above the magnetic-spiral phase transition temperature T(s) exhibit a two-component line shape, as recently documented in Ho. This implies the existence of a second length scale. By using a narrow beam only 300 mum wide, and then translating the crystal through the beam, we have established that the origin of the second length scale lies within the near-surface volume or ''skin'' of the Tb crystal. This is manifested by a large enhancement of the scattering intensity at the c-axis face of the cube-shaped crystal.

引用

页码：1087 / 1090

页数：4

共 12 条

[1]

ANDREWS SR, 1986, J PHYS C SOLID STATE, V19, P3712

[2] POLARIZED NEUTRON GRAZING ANGLE DIFFRACTION [J].