TEMPERATURE-DEPENDENCE OF THE LANDAU-LIFSHITZ DAMPING PARAMETER FOR IRON

被引：13

作者：

COCHRAN, JF ^{[1
]}

RUDD, JM ^{[1
]}

MUIR, WB ^{[1
]}

TRAYLING, G ^{[1
]}

HEINRICH, B ^{[1
]}

机构：

[1] MCGILL UNIV,DEPT PHYS,MONTREAL H3A 2T8,QUEBEC,CANADA

来源：

JOURNAL OF APPLIED PHYSICS | 1991年 / 70卷 / 10期

关键词：

D O I：

10.1063/1.349902

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature dependence of the Landau-Lifshitz damping parameter for pure iron has been obtained over the temperature range 290-800 K from the observed amplitude of 73-GHz microwave radiation transmitted through thin single-crystalline slabs, approximately 45-mu-m thick, at an applied magnetic field corresponding to ferromagnetic antiresonance (FMAR). FMAR occurs when the internal flux density B satisfies the condition B = omega/gamma, where omega is the circular frequency of the microwave radiation and gamma is the gyromagnetic ratio. An applied magnetic field parallel with the specimen plane was used. The Landau-Lifshitz damping parameter was found to increase slowly and monotonically with temperature from the room-temperature value (0.70 +/- 0.06) X 10(8) Hz to (0.86 +/- 0.06) X 10(8) Hz at 800 K.

引用

页码：6545 / 6547

页数：3

共 19 条

[1] TEMPERATURE-VARIATION OF FERROMAGNETIC RELAXATION IN 3D TRANSITION-METALS [J].