RESISTANCE MINIMUM IN ULTRATHIN FERROMAGNETIC-FILMS OF FE ON MGO(100)

被引：33

作者：

LIU, C

PARK, Y

BADER, SD

机构：

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 111卷 / 03期

关键词：

D O I：

10.1016/0304-8853(92)91079-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ultrathin films of Fe grown on MgO(100) in ultrahigh vacuum were studied in Situ as a function of temperature and thickness by means of sheet-resistance Rsquare, Kerr-effect, electron-diffraction and Auger measurements. Ferromagnetic hysteresis appears at room temperature for Fe dosages > 4 monolayers (almost-equal-to 5.7 angstrom). For films almost-equal-to 11 to 14 angstrom thick Rsquare has a minimum at the relatively high temperature of almost-equal-to 260 to 140 K, respectively, attributed to a crossover from 2 dimensional disordered to and 3D metallic system.

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页码：L225 / L230

页数：6

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