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氧化物巨磁电阻效应
  • 项目名称：氧化物巨磁电阻效应
  • 项目类别：重点项目
  • 批准号：19934010
  • 申请代码：A0402
  • 项目来源：国家自然科学基金
  • 研究期限：2000-01-01-2003-12-01
  • 项目负责人：张裕恒
  • 负责人职称：教授
  • 依托单位：中国科学技术大学
  • 批准年度：1999
中文摘要：

氧化物巨磁电阻效应的发现带来一门新兴学科——磁电子学的发展，它将引起微电子产业的又一次革命。本项目研究巨磁电阻材料的导电机制和巨磁电阻效应的产生机制及探索实用化的巨磁电阻材料。研究具有双交换作用和不具有双交换作用的巨磁电阻效应，相变和磁场引起的极化子退局域导致的导电机制；探索提高Te、降低饱和磁场院Hs的途径。

中文主题词： 巨磁电阻；双交换作用；极化子；可变程跃迁；相分离
结论摘要：

英文主题词CMR;DE;Polaron;VRH;Phase separation

成果综合统计
成果类型
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  • 期刊论文
  • 会议论文
  • 专利
  • 获奖
  • 著作
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期刊论文
Spin and charge oscillations of a dot due to interaction with itinerant electrons
Spin-states of Co ion in charge-ordered YBaCo2O5
Localization effect of ordered and disordered orbital polarization in a simplified double-exchange m
Localization-delocalization transition of electron states in a disordered quantum small-world networ
Interplay among charge, spin, and orbital ordering in doped LaMnO3
Magnetic structures of layered perovskite LaSrCoO4
Tuning colossal magnetoresistance response by Cr substitutiion in La0.67Sr0.33MnO3
Abnormal tempreature dependence of low-field magnetization of FeCr2-xAlxS4
Double-exchange ferromagnetism and magnetoresistance in LaMn1-xCuxO3 ( x ( 0.3 )
Spin-state-transition in La1-xSmxCoO3 perovskites
Variable-range hopping of small polarons in mixed-valence manganites
Statistical properties of conductance through a quantum dot in the Coulomb blockade regime
Structure dependence of the tunnel magnetoresistance in junctions
Correlation between the phase of transmission resonances and parity of bound states in a quantum dot
The transport properties of quasi-one-dimensional double-chain systems in a magnetic field
Extraordinary colossal magnetoresistance in La0.67Ca0.33Mn1-xCrxO3 (x(0.3)
Nd0.7Sr0.3MnO3顺磁-铁磁转变的电子自旋共振谱
Mechanism of insulator-metal transition in La2/3Ca1/3MnO3: collapse of small polaron
The magnetism and CMR effect in FeCr2-xGaxS4
Theoretical study on the spin-state transition in doped La2-xSrxCoO4
Surface spin-glass behavior in La2/3Sr1/3MnO3 nanoparticles
Comment I on ''Grain-boundary effects on the electrical resistivity and the ferromagnetic transition
Doping effects from Fe and Ge for Mn in La1-xCaxMnO3 (x=0.15-0.6)
Large magnetic entropy change above 300 K in La0.67Sr0.33Mn0.9Cr0.1O3
Magnetic properties in spinel Fe1 xCr2-xS4 with CMR effect
Effects of lattice distortion on the electrical transport in Ca-deficient La0.67Ca0.33-xMnO3-( (0(x(
Electronic properties in a Hierarchical multilayer structure
Kosterlitz-Thouless -type metal-insulator transition in a double-plane system with a random magnetic
Effect of substrate orientation on the transport properties of La0.67Sr0.33MnO3 epitaxial films
Delocalizing effect of polarons in colossal magnetoresistance material FeCr2S4
Formation of interfacial phase and its effects on the magnetic and transport properties of the La0.8
Magnetocaloric effect in polycrystalline (La0.5Gd0.2)Sr0.3MnO3
Evidence for magnetic cluster around Ge-Site in fixed valence doped manganites La0.7Ca0.3Mn1-yGeyO3
Large effect of small Zn doping on the electric and magnetic properties in LaMn1–xZnxO3
Doping effects on the phase separation in perovskite La0.67-xBixCa0.33MnO3
Current-induced effect on the resistivity of epitaxial thin films of La0.7Ca0.3MnO3 and La0.85Ba0.15
Good rectifying characteristic in p-n junctions composed of La0.67Ca0.33MnO3/Nd-0.7 wt%-doped SrTiO3
The effects of Jahn-Teller distortion changes on transport properties in LaMn1-xZnxO3
Temperature-induced magnetization reversal in FeCr2-xAlxS4
Large magnetic entropy change in the colossal magnetoresistance materials La2/3Ca1/3MnO3
Evolution of spin and charge in a system with interacting impurity and conducting electrons
Scaling behavior of Anderson transition in system with two types of disorder
Aharonov-Bohm Oscillations and Spin Precession in Mesoscopic Ring with Spin-Orbit Interaction
Reversal of local spins in transport of electrons through a one-dimensional chain
Spin dynamics of molecular magnet interacting with injected electrons
Effects of vacuum annealing on the transport property of La0.67Sr0.33MnO3 films
Presence of a paramagnetic phase well below the ferromagnetic onset in La0.67-xBixCa0.33MnO3
Magnetic transition and large low-field magnetoresistance near Curie temperature in polycrystalline
Microstructure and magnetization of single-crystal perovskite manganites nanowires prepared by hydro
Heat conductivity of valence doped La0.7Ca0.3Mn1-xFexO3
Structure, magnetic properties and phase separation of Nd0.5Ca0.5Mn1-xGaxO3 (0
Jahn–Teller distortion induced by Mg/Zn substitution on Mn sites in the perovskite manganites
Direct observation of phase separation in La0.45Sr0.55MnO3-(,
Magnetic and transport behaviors of La0.5(Sr0.53Ca0.47)0.5MnO3 under pressure, magnetic field, and F
Phase separation induced by doping at Mn sites in Nd0.5Ca0.5Mn0.98Ga0.02O3
Effect of lattice expansion on the magnetotransport properties in layered manganites La1.6Sr1.6-yBay
State switching in Bi-doped La0.67Ca0.33MnO3 and the effects of current
Large low-field magnetoresistance of phase-separated single-crystalline Pr 0.7Pb0.3MnO3
Enhanced low-field magnetoresistance in La2/3Ca1/3MnO3/Pr2/3Ca1/3MnO3 superlattice
Hydrothermal synthesis of single-crystal |La0.5Sr0.5MnO3 nanowire under mild conditions
Magnetocaloric effect in layered perovskite manganese oxide La1.4Ca1.6Mn2O7
Percolative metal-insulator transition in layered manganites La1.4Sr1.6-yBayMn2O7
Hydrothermal synthesis of La0.5Ba0.5MnO3 nanowires
Power-law localization in two and three dimensions with off-diagonal disorder
Fractal analysis of wave functions at the localization-delocalization transition in a disordered qua
Localization transition in multilayered disordered systems
Coexistence of pd hybridization conduction and double-exchange conduction in heavily doped La1.85-2x
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