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磁场对重电子金属材料CeCu_(6-x)Cd_x电阻的影响

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物理学报 2005年第4期54卷 1777-1782页

作者：姜黎霞孟继宝陈兆甲雒建林北京联合大学基础部北京100101 中国科学院物理研究所北京100080

介绍了重电子金属CeCu6 -xCdx(x=0 10 ,0 15 ,0 2 0 ,0 30 ,0 5 0 )在 1 8— 30 0K温度范围内 ,在磁场 (μ0 H =0 ,5 ,10T)下电阻随温度的变化规律及低温 (1 9,15K)下的磁电阻 (μ0 H =0— 10T) .实验表明所有样品在零场下的Tmax(... 详细信息

介绍了重电子金属CeCu6 -xCdx(x=0 10 ,0 15 ,0 2 0 ,0 30 ,0 5 0 )在 1 8— 30 0K温度范围内 ,在磁场 (μ0 H =0 ,5 ,10T)下电阻随温度的变化规律及低温 (1 9,15K)下的磁电阻 (μ0 H =0— 10T) .实验表明所有样品在零场下的Tmax(对应于电阻极大值的温度 )都低于 1 8K .加磁场后 ,Tmax随磁场和掺杂量x的增加明显向高温方向变化 .此外 ,各样品的磁电阻在 1 9K全是负值 ,温度升高到 15K以后 ,磁电阻有变为正值的趋势 .从近藤散射和相干散射的角度对这一现象的物理机制进行了分析 .

关键词：重电子金属低温电阻近藤散射相干散射磁电阻

Synthesis and Crystal Structure of 4-Salicylimine-3, 5-bis(2-hydroxyphenyl)-1, 2, 4-triazole ji bao-Minga

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Chinese Journal of Structural Chemistry 2002年第3期21卷 252-255页

作者： ji bao-Ming DU Chen-Xia ZHU Yu WANG Yang Department of Chemistry Luoyang Teacher's College Luoyang 471022 Department of Chemistry Zhengzhou University Zhengzhou 450052 School of Pharmacy Fudan University 上海 200032

The title compound, 4-salicylimine-3, 5-bis(2-hydroxyphenyl)-1, 2, 4-triazole, was obtained by the condensation reaction of 4-amino-3, 5-bis(2-hydroxyphenyl)-1, 2, 4-triazole with salicylaldehyde in methanol. The crystal structure (C21H16N4O3, Mr = 372.38) belongs to monoclinic system, space group P21/n with a = 10.507(2), b = 16.878(3), c = 11.199(2) ? = 110.86(3), V = 1855.9(6) ?, Z = 4, Dc = 1.333 g/cm3, F(000) = 776, (MoK? = 0.092 mm-1, R = 0.0552 and wR = 0.1095 for 1920 reflections ( I > 2.0(I) ). The analytical results of crystal structure show that there are two different non-covalent interactions in the compound. One is hydrogen bond, and the other p-p stacking interaction. These two types of non-covalent interactions play an important role in the packing of crystal.

关键词： triazole hydrogen bond crystal structure stacking interaction

重电子金属CeCu_(5.8)M_(0.2)(M=Ni,Zn,Cd)低温物性的比较

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物理学报 2004年第4期53卷 1177-1181页

作者：孟继宝陈兆甲雒建林景秀年王楠林中国科学院物理研究所北京100080

研究了不同元素等量掺杂下重电子金属CeCu5 .8M0 .2 (M =Ni ,Zn ,Cd)低温电阻、比热容和磁化率随温度的变化关系 .分析讨论了掺杂元素M(M =Ni,Zn ,Cd)的磁性、价态及原子尺寸对近藤温度TK 、相干温度 (即电阻极大值的温度TRmax)、每个C... 详细信息

研究了不同元素等量掺杂下重电子金属CeCu5 .8M0 .2 (M =Ni ,Zn ,Cd)低温电阻、比热容和磁化率随温度的变化关系 .分析讨论了掺杂元素M(M =Ni,Zn ,Cd)的磁性、价态及原子尺寸对近藤温度TK 、相干温度 (即电阻极大值的温度TRmax)、每个Ce离子在较高温度时的平均磁矩 μB

关键词：重电子系统低温电阻低温比热容磁化率掺杂电子自旋屏蔽低温物理

A versatile synthetic strategy towards rare earth based metal-organic frameworks

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Science China Chemistry 2025年

作者： Quan Shi Yun-Hao Xu Ming-Hui Chen Peng Zhao Wen-Bo Deng ji Xiong Kai Guo Ya-Qing Feng bao Zhang School of Chemical Engineering and Technology Tianjin University Tianjin Collaborative Innovation Center of Chemical Science and Engineering Guangdong Laboratory Chemistry & Fine Chemical Industry jieyang Center

Rare earth metal-organic frameworks (RE-MOFs) have drawn wide attention owing to diverse network structures and various application ***,due to the unpredictable formation of the nodes,it is still challenging to design novel RE-MOFs.A novel versatile strategy was developed employing a RE-acetate complex (RE2(CH3COO)6·4H2O) as a precursor to construct RE-MOFs.2D RE-MOFs (RE-DBP) and 3D RE-MOFs (RE-TCPP) could be obtained by using dicarboxylic porphyrin ligands H2DBP and tetracarboxylic porphyrin ligands H2TCPP,*** RE-MOFs were further synthesized to verify the universality of the *** crystalline RE-MOFs could also be prepared at room temperature via the developed strategy,which could significantly promote large-scale preparation and practical application of *** proof of the concept,the performance of porphyrin-based RE-MOFs was investigated in the photocatalytic cycloaddition of CO2with *** the RE-DBP(Co) MOFs,Tb-DBP(Co) exhibited the best photocatalytic performance,which was also greater than that of the corresponding 3D MOF Tb-TCPP(Co) due to the optimal 2D structure and thus the accelerated photogenerated charge separation and transfer *** work not only provides a novel versatile strategy to design and develop RE-MOFs,but also proposes a promising approach for the potential bulk production of RE-MOFs at room temperature.

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Zn含量对重电子金属CeCu_(6-x)Zn_x低温性质的影响

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物理学报 2002年第12期51卷 2812-2817页

作者：孟继宝陈兆甲雒建林白海洋王楠林王玉鹏中国科学院理化技术研究所中国科学院物理研究所极端条件物理实验室北京100080 中国科学院研究生院北京100039 中国科学院物理研究所极端条件物理实验室

报道了掺Zn的重电子金属CeCu6 -xZnx(x =0 .0 5 ,0 .1,0 .15 ,0 .2 ,0 .3)样品的非常规制备方法以及低温电阻和低温比热容的测量结果 ,研究Zn含量对CeCu6 -xZnx 低温性质的影响及其物理原因 .发现低温下Kondo散射项系数c随Zn含量的加大... 详细信息

报道了掺Zn的重电子金属CeCu6 -xZnx(x =0 .0 5 ,0 .1,0 .15 ,0 .2 ,0 .3)样品的非常规制备方法以及低温电阻和低温比热容的测量结果 ,研究Zn含量对CeCu6 -xZnx 低温性质的影响及其物理原因 .发现低温下Kondo散射项系数c随Zn含量的加大而减小 ,电阻极大值温度Tmax随Zn含量的加大而降低 ,CeCu6 -xZnx 的德拜温度ΘD

关键词： Zn含量重电子金属 CeCu6-xZnx 低温性质重费密子系统低温比热容低温电阻相干散射镜含量强关联电子系统

重电子金属CeCu_(6-x)Ni_x低温电阻与比热的研究

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物理学报 2002年第1期51卷 129-133页

作者：孟继宝陈兆甲雒建林白海洋汪卫华郑萍张杰苏少奎金铎王玉鹏中国科学院物理研究所极端条件物理实验室北京100080 重庆大学应用物理系重庆400044

测量了重电子金属CeCu6 -xNix(x =0 ,0 0 5 ,0 1,0 15 ,0 2 ) 0 1K— 2 5 0K的低温电阻和 5K— 70K低温比热 ,发现样品电阻的极大值温度随着掺Ni含量的增大而急剧下降 ,这一现象反映少数与Ni邻近的Ce离子在极低温下磁矩的加强和整... 详细信息

测量了重电子金属CeCu6 -xNix(x =0 ,0 0 5 ,0 1,0 15 ,0 2 ) 0 1K— 2 5 0K的低温电阻和 5K— 70K低温比热 ,发现样品电阻的极大值温度随着掺Ni含量的增大而急剧下降 ,这一现象反映少数与Ni邻近的Ce离子在极低温下磁矩的加强和整个Ce离子点阵对导电电子相干散射的减弱 .与此相反 ,低温电子比热系数γ在较低温度下近于常数 ,而在 8K附近因有效质量变大而明显上升 ,但γ明显上升的温度 ,对Ni的含量却不敏感。

关键词：重费米子系统低温比热低温电阻重电子金属强关联电子系统 CeCu6-xNix 铈铜镍

Normalized Excited Squeezed Vacuum State and Its Applications

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Communications in Theoretical Physics 2007年第5期47卷 927-932页

作者： meng Xiang-Guo WANG ji-Suo LIANG bao-Long Department of Physics Liaocheng University Liaocheng 252059 China

By using the intermediate coordinate-momentum representation in quantum optics and generating function for the normalization of the excited squeezed vacuum state （ESVS）, the normalized ESVS is obtained. We find that its normalization constants obtained via two new methods are uniform and a new form which is different from the result obtained by Zhang and Fan [Phys. Lett. A 165 （1992） 14]. By virtue of the normalization constant of the ESVS and the intermediate coordinate-momentum representation, the tomogram of the normalized ESVS and some useful formulae are derived.

关键词： ESVS technique of integration within an ordered product of operators intermediate coordinate- momentum representation generating function

Some Properties of Two-mode Displaced Excited Squeezed Vacuum States

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Communications in Theoretical Physics 2009年第9期52卷 493-499页

作者： meng Xiang-Guo WANG ji-Suo LIANG bao-Long Department of Physics Liaocheng University Liaocheng 252059 China

In this paper,two-mode displaced excited squeezed vacuum states (TDESVS) are constructed and theirnormalization and completeness are *** the entangled state representation and Weyl ordering formof the Wigner operator,the Wigner functions of TDESVS are obtained and the variations of Wigner functions withthe parameters m,n and r are ***,two marginal distributions of Wigner functions of TDESVS areobtained,which exhibit some entangled properties of the two-particle's system in TDESVS.

关键词： two-mode displaced excited squeezed vacuum state Weyl ordering Wigner function marginal distribution entangled state representation

Husimi Functions of Excited Squeezed Vacuum States

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Communications in Theoretical Physics 2009年第9期52卷 487-492页

作者： meng Xiang-Guo WANG ji-Suo LIANG bao-Long Department of Physics Liaocheng University Liaocheng 252059 China

Based on the Husimi operator in pure state form introduced by Fan et al,which is a squeezed coherentstate projector,and the technique of integration within an ordered product (IWOP) of operators,as well as the entangledstate representations,we obtain the Husimi functions of the excited squeezed vacuum states (ESVS) and two marginaldistributions of the Husimi functions of the ESVS.

关键词： excited squeezed vacuum state IWOP technique entangled state representation Husimi operator Husimi function marginal distribution