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SPIN-DEPENDENT TUNNELING MAGNETORESISTANCE IN Fe-O/AlOx/Fe-O FILMS S.Luo1,P.Wu1,L.Q.Pan1,Y.Tian1,H.Qiu1,F.P.Wang1 (1.Beijing Keda-Tianyu Microelectronic Materials Technology Development Co. Ltd... structrure of α-Fe is observed in both electrodes. Largetunnel magnetoresistance in large Fe-O/AlOx/Fe-O junctions of 1cm2 is observed atroom temperature and the Ⅰ-Ⅴ characteristic curve of the junction......
Article ID: 1003-6326(2005)02-0414-05 Influences of post-annealing and internal stress on magnetoresistance properties of Ni80Fe20 films GAO Yan-qing(高艳清), WU Ping(吴 平), CAI En-jing(蔡恩静... films were annealed at 350, 450 and 570℃respectively for 1h. After annealing at 570℃, the anisotropic magnetoresistance ratio(RAM) of the films is greatly improved. It increases to 3%-3.5% nearly......
results show that the amorphous Fe3O4 films exhibit a superparamagnetic response at a large-scale from 20 nm to 150 nm, and the magnetoresistance (MR) isn’t detected. By contrast, the polycrystalline Fe3O4 films possess large saturation magnetization Ms of 420 A/(kg?cm) and a clear magnetoresistance with a field of 40 kA/m. The unusual properties for the amorphous Fe3O4 film are attributed......
diffraction at room temperature. The results show that the tunneling magnetoresistance of polycrystalline Sr2FeMoO6 depends on its annealing temperature. Annealing at 800 ℃ makes the minimal magnetoresistance(MR) elevated, which may be due to the change of the grain size or the modified intergranular connections. Because of the impurity phase of Fe which probably affects the magnetotransport properties......
Anisotropic Magnetoresistance of Perovskite La2/3 Ca1/3MnO3/YBa2Cu4O8/La2/3Ca1/3MnO3 Trilayer Films Wu Cheng1,Zhang Li1,Zhao Kun1 (1.Magnetoelectronics Laboratory, School of Physics Science and Information Technology, Liaocheng University, Liaocheng 252059, China) Abstract:The anisotropic magnetoresistance (MR) of La2/3Ca1/3MnO3 (LCMO)/YBa2Cu4O8 (YBCO) /LCMO sandwiches on (001) SrTiO3 were......
Article ID: 1003-6326(2005)02-0323-05 Magnetoresistance and magnetization of La2/3(Ca0.60Ba0.40)1/3MnO3 in different temperature ranges GAI Rong-quan(盖荣权)1, HUANG Zhi-gao(黄志高)1, 2, LAI Heng(赖... University, Nanjing 210093, China) Abstract: A polycrystalline La2/3(Ca0.60Ba0.40)1/3MnO3 was prepared by standard solid reaction method. Magnetization(M) and magnetoresistance of the sample were measured......
, Buffalo, NY 14260, USA Received 10 April 2006; accepted 25 April 2006 Abstract: Recent work on magnetic quantum point contacts (QPCs) was discussed. Complete magnetoresistance loops across Co QPCs as small as a single atom was measured. The remarkable feature of these QPCs is the rapid oscillatory decay in magnetoresistance with the increase of contact size. In addition, stepwise or quantum......
Giant Low-Field Magnetoresistance in Polycrystalline La2/3Ca1/3Mn1-xCuxO3 Sintered at 1100 ℃ 夏正才1,刘洁1,袁松柳1,张国庆1,杨应平1 (1.Department of Physics,Huazhong University of Science and Technology, Wuhan..., conductive mechanism and low-field magnetoresistance (MR0) were investigated. It is found that conductive mechanism is described by Mott′s variable-range hopping and the MR0 near the insulator-metal......
MAGNETORESISTANCE EFFECT OBSERVED IN Fe/Mo MULTILAYERS PREPARED BY ELECTRON BEAM EVAPORATION F.Zeng1,F.Pan1,B.Zhao1,T.He1,Y.Gao1 (1.Laboratory of Advanced Materials, Department of Materials Science... were studied by X-ray diffraction, vibratingsample magnetometer (VSM) et al. The experimental results revealed that the Fe/Mo multilayers in our experimental conditions behaved magnetoresistance effect......
Article ID: 1003-6326(2005)06-1280-05 Spin-valve magnetoresistance in Co/Si/(Co/Cu/Co) multilayers SHEN Hong-lie(沈鸿烈), LI Guan-xiong(李冠雄) (College of Materials Science...-beam evaporation. It was found that a Si spacer (≥0.9nm) could greatly decrease the interlayer coupling in Co/Si/Co sandwiches and there was no magnetoresistance(MR) or spin-valve MR in them due......