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Research of Colossal Magnetoresistance in La0.67Ca0.33Mn1-xCrxO3 (0.00≤x≤0.15) 孙勇1,刘宁1 (1.Structure Research Laboratory,University of Science and Technology of China,Hefei 230026,China;2.Department of Physics,Suzhou College,Suzhou 234000,China) Abstract:The extraordinary colossal magnetoresistance (CMR) behavior in was found that the substitution with Cr on Mn sites introduces an additional......
Magnetoresistance Study of YCo6Ge6-type Dy0.4Sm0.6Mn6Ge6 Compound汪汝武,张立刚,李亚伟,陈静,李云宝,张国宏摘 要:The magnetoresistance (MR) measurements on a naturally occurring multilayer Dy0.4Sm0.6Mn6Ge6 were presented, which is ferrimagnetic below 445 K. In the temperature range below 65 K, MR displays a maximal value around 3 T and above this critical field MR decreases......
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......
Magnetic Properties and Colossal Magnetoresistance of La0.7Sr0.3MnO3 Materials Doped with Fe 马廷钧1,张健2,鲜于文旭3,李宝河1 (1.Beijing Technology and Business University, Beijing 100037, China;2.Institute... by the sol-gel technique. The effects of Fe doping on the magnetic properties, conductivity and magnetoresistance for La0.7Sr0.3MnO3 was investigated. Experimental results indicate that the Fe doping......
Magnetic and Magnetoresistance Properties in (La0.67 Ca0.33 MnO3)x/(ZrO2 )1-x Composite System () Abstract:(La0.67Ca0.33MnO3)x /(ZrO2)1-x (x is the volume fraction ratio) percolated composites were fabricated by combining La0.67Ca0.33MnO3 (LCMO) powders with ZrO2 particles, where LCMO powders were prepared by sol-gel process. Low field magnetoresistance ( LFMR ) is greatly enhanced at low......
Magnetoresistance enhancement and temperature stability of magnetoresistance in La1-x(Sr1-yNay)xMnO3WANG Guiying a,b,YAN Guoqing a,b,YANG Jie a,b,WANG Wenqi a,b,TANG Yonggang a,b,SONG Qixiang a,b... of magnetoresistance in the system La1-x(Sr1-yNay)xMnO3 with unchanged Mn3+/Mn4+ ratio through the doping of both monovalent and divalent elements at A site were studied through the measurements of X-ray diffraction......
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......
Electric transport mechanism and magnetoresistance of La0.80Sr0.15Ag0.05MnO3/x(CuO)Peng Liu1,2,Gui-Ying Wang1,2,Qiang Mao1,2,Ning Liu3,Zhen-Sheng Peng11. Anhui Key Laboratory of Spintronic and Nano...), scanning electron microscope(SEM) equipped with energy dispersive spectroscopy(EDS), electric transport mechanism, and magnetoresistance enhancement, and the temperature stability of magnetoresistance......
Abnormal electric transport property and magnetoresistance stability of La-Sr-K-Mn-O systemYong-Gang Tang1,2,Gui-Ying Wang1,2,Guo-Qing Yan1,2,Qi-Xiang Song1,2,Ming-Yu Zhang1,2,Zhen-Sheng Peng11...-field magnetoresistance; in the comparatively wide temperature range near 250 K, the MR-T curves of all the samples are comparatively flat, and the value of MR almost does not change with temperature......
Magnetocaloric Effect in Colossal Magnetoresistance Material (La0.6Dy0.1)Sr0.3MnO3 XU Sujun1,Cai Zhirang2,Tong Wei1,Liu Ning2,ZHANG Yuheng1,Sun Yong1 (1.Structure Research Laboratory, University... magnetoresistance material (La0.6Dy0.1)Sr0.3MnO3 was studied. From the measurement and calculation of isothermal magnetization (M-H) curves under various temperatures, a large magnetocaloric effect......
