搜索结果: 1-15 共查到“物理学 MgO”相关记录16条 . 查询时间(0.05 秒)
Chirality control by electric field in periodically poled MgO-doped lithium niobate
Chirality control electric field periodically poled MgO-doped lithium niobate Optics
2012/4/19
We study the chirality of periodically poled MgO-doped lithium niobate (MgO:PPLN) by electro-optic (EO) effect. It shows that optical propagation is reciprocal in MgO:PPLN when quasi-phase-matching (Q...
Tunneling anisotropic magnetoresistance of NiFe/IrMn/MgO/Pt stack: An antiferromagnet based spin-valve
anisotropic magnetoresistance NiFe/IrMn/MgO/Pt stack
2010/11/22
Spin-valve is a microelectronic device in which high and low resistance states are realized by utilizing both charge and spin of carriers. Spin-valve struc-tures used in modern hard drive read-heads a...
Local electronic structure of Fe$^{2+}$ impurities in MgO thin films: Temperature-dependent soft x-ray absorption spectroscopy study
Local electronic structure of Fe$^{2+}$ impurities Temperature-dependent soft x-ray absorption spectroscopy study
2010/11/18
We report on the local electronic structure of Fe impurities in MgO thin films. Using soft x-ray absorption spectroscopy (XAS) we verified that the Fe impurities are all in the 2+ valence state.The fi...
Extremely long quasiparticle spin lifetimes in superconducting aluminium using MgO tunnel spin injectors
Extremely long quasiparticle spin lifetimes superconducting aluminium
2010/11/23
There has been an intense search in recent years for long-lived spin-polarized carriers for spintronic and quantum-computing devices. Here we report that spin polarized quasi-particles in superconduct...
III, IV和V 主族原子掺杂MgO研究取得进展（图）
中国科学院固体物理研究所 III IV V 主族原子
2010/1/28
半金属铁磁体表现出的各种特殊性质一直受到人们的广泛关注，此类材料在自旋电子学器
件中有着很好的应用。半金属，即费米面处的电子只能通过一种自旋通道传输，传统的半金属
铁磁材料都含有过渡金属d电子，一般的理论方法想准确的处理起来很困难。
利用90°离轴射频磁控溅射方法将La0.7Ca0.3MnO3(LCMO)沉积于(001)取向的MgO单晶基片上,薄膜厚度变化范围为5nm到200nm. 通过掠入射X射线衍射技术测量了LCMO/MgO薄膜的面内晶格常数, 结合常规X射线衍射研究了LCMO薄膜的晶格应变及其弛豫情况, 用四探针法测量了薄膜的磁电阻特性.结果表明, LCMO/MgO薄膜均为(001)取向生长, 在厚度小于5nm时已经发生...
First Principle Calculation of Potential and Multi-Channel Transport in Fe/MgO/Fe Hetero-Junction
Hetero-Junctions Electronic Transport S-Matrix Theory
2010/7/5
In this work we studied the behavior of multi-channel tunneling through a realistic Fe/MgO/Fe hetero-junction ab initio potential. For this purpose we obtained Fe/MgO/Fe(001) hetero-junction effective...
MgO, Y2O3 , MnO2 掺杂PZT超声压电陶瓷性能研究
压电陶瓷 掺杂 显微硬度 绝缘电阻
2008/1/9
摘要
为了探索出压电陶瓷的最佳烧成工艺以改善样品性能, 对MgO，Y2O3 和 MnO2 掺杂的Pb0.95Sr0.05(Zr0.535Ti0.465)O3 压电陶瓷制品进行了改性研究．实验采用传统电子陶瓷的制作工艺，制得了一系列样品,测量了不同组分样品的密度、体积收缩率、显微硬度和部分样品极化前的绝缘电阻值，得到样品的最大密度为 6.8346 g/cm3，最大体积收缩率超过40%. 研究结果表...
以MgO为缓冲层的硅基铌酸锶钡薄膜取向特性与其波导结构的设计研究
铌酸锶钡 MgO缓冲层 损耗
2007/12/9
采用溶胶－凝胶法在Si(100)基片上制备出择优取向的MgO薄膜,随后在其上生长出具有择优取向的铌酸锶钡铁电薄膜.实验发现,MgO缓冲层的应用可以大大提高SBN薄膜的择优取向性能.同时,用五层对称理想波导耦合模理论,以SBN为波导层,分析了波导损耗与厚度的关系. 通过对计算出的理想结果与实际相结合,以及对SBN在生长过程工艺与损耗关系的研究,制备出高质量、低损耗的SBN薄膜,为其在电光波导调制器等...
Calculations of the Spin-Lattice Coupling Coefficients
Fij and Zij for MgO:Co2+ Crystal
spin-lattice coupling coefficients electronic paramagnetic
resonance crystal- and ligand-field theory
Co2+ MgO crystal
2007/8/15
2001Vol.36No.4pp.487-490DOI:
Calculations of the Spin-Lattice Coupling Coefficients
Fij and Zij for MgO:Co2+ Crystal
ZHENG Wen-Chen1,2 and WU Shao-Yi1,2
1 Department of ...
Pressure-Induced Shift of R-Line of MgO:Cr3+ with Electron-Phonon Interaction Effect
high-pressure effect electron-phonon interaction R-line
improved ligand-field theory
2007/8/15
2007Vol.48No.2pp.357-362DOI:
Pressure-Induced Shift of R-Line of MgO:Cr3+ with Electron-Phonon Interaction Effect
ZHANG Zheng-Jie1 and MA Dong-Ping2
1 College of Informa...
Theoretical Calculations of Strain-Induced Splittings and/or Shifts of t232E and
t234A2
Levels for MgO:Cr3+
strain and stress splitting and shift of levels
ligand field admixture of wavefunctions single-electron
reduced matrix elements
2007/8/15
2001Vol.36No.2pp.219-226DOI:
Theoretical Calculations of Strain-Induced Splittings and/or Shifts of t232E and
t234A2
Levels for MgO:Cr3+
MA Dong-Ping,1,2 MA Ning3 and CHEN Ju-Ro...
Improved Ligand-Field Calculation of Energy Spectrum and R-Line Thermal Shift of MgO:Cr3+
improved ligand-field theory electron-phonon interaction energy spectrum strain-induced splitting thermal shift g factor
2007/8/15
2007Vol.47No.5pp.937-943DOI:
Improved Ligand-Field Calculation of Energy Spectrum and R-Line Thermal Shift of MgO:Cr3+
ZHANG Zheng-Jie1 and MA Dong-Ping2
1 College of In...
Microscopic-Theoretical Calculations of R-Line Thermal Shifts and Broadenings of
MgO:V2+
crystal fields optical properties electron-phonon
interaction electronic structure thermal shift and broadening
thermal expansion
2007/8/15
2002Vol.37No.5pp.631-636DOI:
Microscopic-Theoretical Calculations of R-Line Thermal Shifts and Broadenings of
MgO:V2+
MA Dong-Ping,1,2 LIU Yan-Yun,1 MA Ning,3 and CHEN Ju-Rong1
...
Microscopic Theoretical Calculations of R-Line ThermalShifts and Broadenings of MgO:Cr3+
crystal fields optical properties thermal shift
and broadening electron-phonon interaction thermal expansion
2007/8/15
2002Vol.37No.3pp.373-380DOI:
Microscopic Theoretical Calculations of R-Line ThermalShifts and Broadenings of MgO:Cr3+
MA Dong-Ping,1,2 LIU Yan-Yun,1 MA Ning3 andCHEN Ju-Rong1
...