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电子显微学报 전자현미학보
JOURNAL OF CHINESE ELECTRON MICROSCOPY SOCIETY
2002年 3期 279-282 ,共4页

朱健民%朱信华%杨科%刘治国%都有为%邢定钰%李齐%冯端

주건민%주신화%양과%류치국%도유위%형정옥%리제%풍단

隧道磁电阻效应%锌铁酸盐%透射电子显微镜隧道磁電阻效應%鋅鐵痠鹽%透射電子顯微鏡
수도자전조효응%자철산염%투사전자현미경
tunneling magnetoresistance effect%zinc ferrite%TEM

在具有纳米绝缘层的多晶锌铁氧体体系中,当晶界为α Fe2O3纳米量级的绝缘层时,则构成(ZnxFe3xO4)α-Fe2O3非均匀体,电子显微分析证实了这种微结构.该体系在0 5T磁场、4 2K温度下,磁电阻效应可达1280%,300K下为158%.
재구유납미절연층적다정자철양체체계중,당정계위α Fe2O3납미량급적절연층시,칙구성(ZnxFe3xO4)α-Fe2O3비균균체,전자현미분석증실료저충미결구.해체계재0 5T자장、4 2K온도하,자전조효응가체1280%,300K하위158%.
Giant tunneling magnetoresistance (TMR) effect as large as 1280% at 4 2K and 15M and SAED as well as HREM. The huge TMR is attributed to the high spin polarizaith a huge TMR at room temperature, which is interesting to be further studied in the future.