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稀土空位锰氧化物(La(1-x-y)Yy)2/3Ca1/3MnO3的结构和输运性质
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来源: 《中国有色金属学报2005年第12期》——罗广圣 李小怡 吴小山
-LCMO system, a metal-insulator transition is observed at about -267K. The maximum of the magnetoresistance value is about 220% at TMI when x is 0.04. For V-LYMCO system, TMI is observed at about 50K, a very larger magnetoresistance up to about 106% is observed at 40-50K. It is suggested that it may be related to the partial substitution of La3+ cation with smaller Y3+, which may destroy the double......
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Structure and Transport Behaviors of Nanograin La0.8Sr0.2Mn1-xAlxO3
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来源: 《Journal of Rare Earths2007年第S2期》——江少群 马欣新 孙明仁 唐光泽 王刚
temperature (TIM) and room temperature magnetoresistance decreased as the aluminum concentration increased. In the T>TIM region, the current carriers were moving in variable range transition mode......
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Influence of the substitution of Sm, Gd, and Dy for La in La0.7Sr0.3MnO3 on its magnetic and electric properties and strengthening effect on room-temperature CMR
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来源: 《Journal of Rare Earths2008年第6期》——宋启祥 王桂英 严国清 毛强 王闻琦 彭振生
of Sm, Gd, and Dy for La on the magnetic and electric properties and on the magnetoresistance (MR) was studied through measurements of M-T curves and ρ-T curves. The results showed that: lattice......
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Effect of different synthesis techniques on structural, magnetic and magneto-transport properties of Pr0.7Sr0.3MnO3 manganite
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来源: 《Journal of Rare Earths2010年第5期》——Umesh Chand Kamlesh Yadav Varma G D
techniques, the sample synthesized by co-precipitation method exhibited the highest magnetoresistance (~63%).关键词:......
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Magnetocaloric and magneto-transport properties of Gd10Co20Si70 alloy
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来源: 《Journal of Rare Earths2019年第1期》——T.P.Rashid K.Arun ANDrea Dzubinska R.Nagalakshmi
and magnetocaloric effect (MCE) studies of newly synthesized Gd10Co20Si70 alloy. These measurements confirm an antiferromagnetic transition at TN=9 K. Both MCE and magnetoresistance (MR) show quadratic......
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Cu-doping induced ferromagnetic insulating behavior and domain wall pinning effects in LaMnO3
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来源: 《Rare Metals2011年第4期》——GAO Tiana,CAO Shixunb,LIU Yongshenga,ZHANG Yufenga,and ZHANG Jincangb a Department of Mathematics and Physics,Shanghai University of Electric Power,Shanghai ,China b Department of Physics,Shanghai University,Shanghai ,China
paramagnetic-ferromagnetic transition and a considerable magnetoresistance effect were observed at the ferromagnetic ordering temperature TC,but no insulator-metal transition induced by Cu-doping......
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Magnetic properties and structure of very thin permalloy films
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来源: 《International Journal of Minerals Metallurgy and Materials2004年第3期》——Guanghua Yu;Haifeng Li;Tao Yang;Fengwu Zhu Materials Science and Engineering School, University of Science and Technology Beijing, Beijing , China
prepared by different instruments at an ultrahigh base vacuum and a lower base vacuum. The anisotropic magnetoresistance co-efficients (ΔR/R) of Ni81Fe19 (12nm) films reached 1.6% and 0.6......
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Tantalum oxide barrier in magnetic tunnel junctions
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来源: 《International Journal of Minerals Metallurgy and Materials2004年第4期》——Guanghua Yu, Tingting Ren, Wei Ji, Jiao Teng, and Fengwu ZhuMaterials Science and Engineering School, University of Science and Technology Beijing, Beijing , China
. A magnetic "dead layer" could be produced in the NiFe/Ta interface. The "dead layer" is likely to influence the spinning electron transport and the magnetoresistance effect.关键词:......
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Effect of Co Ion Implantation on GMR of [NiFeCo(10 nm)/Ag(10 nm)]×20 Multilayer Film
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来源: 《JOURNAL OF MATERIALS SCIENCE TECHNOLOG2005年第4期》——Yuding HE, Shejun HU, Jian LI and Guangrong XIE College of Material and Energy, Guangdong University of Technology, Guangzhou , China
were investigated after Co ion implantation and annealing at 280, 320, 360 and 400℃, respectively. GMR (giant magnetoresistance) ratio of the film with/without Co ion implantation was measured......
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Effect of different synthesis techniques on structural, magnetic and magneto-transport properties of Pr0.7Sr0.3MnO3 manganite
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来源: 《JOURNAL OF RARE EARTHS2010年第5期》——Umesh Chand Kamlesh Yadav Varma G D
techniques, the sample synthesized by co-precipitation method exhibited the highest magnetoresistance (~63%).关键词:......