EUS ABOVE TC - SPIN-WAVE EXCITATIONS IN MAGNETIC-FIELDS

被引：4

作者：

REBELSKY, L ^{[1
]}

BONI, P ^{[1
]}

SHAPIRO, SM ^{[1
]}

BOHN, HG ^{[1
]}

ZINN, W ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH, INST FESTKORPERFORSCH, W-5170 JULICH 1, GERMANY

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1990年 / 84卷 / 1-2期

关键词：

D O I：

10.1016/0304-8853(90)90182-P

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Inelastic neutron scattering is used to study the magnetic field and temperature dependence of the induced spin wave excitations in a Heisenberg ferromagnet in the paramagnetic phase. The measurements were performed on a 153EuS single crystal in fields up to 50 kOe and for temperatures up to 30 K (1.9Tc). The spin wave stiffness D depends upon magnetic field and temperature. Using a simple semiclassical description based on the magnetization change we explain the linear change of D(H, T) with field and the decrease of D(H, T) with increasing temperature. © 1990.

引用

页码：201 / 207

页数：7

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