MAGNETIC AND TRANSPORT-PROPERTIES OF FERROMAGNETIC PARTICULATE ARRAYS FABRICATED ON SUPERCONDUCTING THIN-FILMS

被引：52

作者：

GEOFFROY, O

GIVORD, D

OTANI, Y

PANNETIER, B

OSSART, F

机构：

[1] LAB LOUIS NEEL,CNRS,BP 166X,F-38042 GRENOBLE,FRANCE

[2] CTR RECH TRES BASSES TEMP,F-38042 GRENOBLE,FRANCE

[3] ENSIEG,LEG,F-38402 ST MARTIN DHERES,FRANCE

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 121卷 / 1-3期

关键词：

D O I：

10.1016/0304-8853(93)91191-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two-dimensional arrays of amorphous R-Co (R = Sm and Gd) square particles were prepared on 200 angstrom thick niobium films. Demagnetizing processes studied as a function of spatial periodicity are very different from those of uniform films with no pattern. Calculations show that the inter-particle dipolar interactions are negligibly small compared to self dipolar interactions. Interesting periodic oscillations were observed in the magnetoresistance measured around the superconducting transition temperature of the niobium film (T(c) = 7.1 K)

引用

页码：223 / 226

页数：4