High-resolution collinear fast-ion-beam-laser spectroscopy has been applied to investigate the optical isotope shifts for transition 4f^(4)5d^(6)K_(11/2)-(24445)°_(11/2) of NdⅡ.From the measured optical isotope ...High-resolution collinear fast-ion-beam-laser spectroscopy has been applied to investigate the optical isotope shifts for transition 4f^(4)5d^(6)K_(11/2)-(24445)°_(11/2) of NdⅡ.From the measured optical isotope shifts,changes in mean-square nuclear charge radiiδ(r^(2))(fm^(2))among five even-even neodymium isotopes have been deduced:(142,144)0.282,(144,146)0.242,(146,148)0.274,(148,150)0.404.The results are in good agreement with experimental data from electronic x-ray spectroscopy and combined optical and x-ray spectroscopy.展开更多
Ⅰ. INTRODUCTION It has been proved that YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> superconducting thin films can be epitaxially grown on SrTiO<sub>3</sub> by dc magn...Ⅰ. INTRODUCTION It has been proved that YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> superconducting thin films can be epitaxially grown on SrTiO<sub>3</sub> by dc magnetron sputtering method with good lattice match along the axes However, for the epitaxial growth of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> superconducting thin film on Zr（Y）O<sub>2</sub>, its[100] direction is parallel to the[110] direction of Zr（Y）O<sub>2</sub> in stead of the lattice matching along the axes, which is due to the big mismatch between YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub>展开更多
Ⅰ. INTRODUCTIONX. D. Xiang et al. have reported the preliminary structural characteristics of the iodine intercalated Bi_2Sr_2Ca_1Cu_2O_y high T_c superconductors. The cell dimension along c direction is expanded fro...Ⅰ. INTRODUCTIONX. D. Xiang et al. have reported the preliminary structural characteristics of the iodine intercalated Bi_2Sr_2Ca_1Cu_2O_y high T_c superconductors. The cell dimension along c direction is expanded from 30.80 to 37.78 after iodine is intercalated. They suggested that an iodinelayer addition with 3.5 thickness is inserted into the host crystal perpendicular to c direction. The transition temperature of the host superconductor is ranged from 82 to 90 K.展开更多
基金Supported by the National Climbing Project of Chinathe National Natural Science Foundation of China under Grant No.19774016the Doctoral Research Funds of the State Education Commission of China under Grant No.9424626。
文摘High-resolution collinear fast-ion-beam-laser spectroscopy has been applied to investigate the optical isotope shifts for transition 4f^(4)5d^(6)K_(11/2)-(24445)°_(11/2) of NdⅡ.From the measured optical isotope shifts,changes in mean-square nuclear charge radiiδ(r^(2))(fm^(2))among five even-even neodymium isotopes have been deduced:(142,144)0.282,(144,146)0.242,(146,148)0.274,(148,150)0.404.The results are in good agreement with experimental data from electronic x-ray spectroscopy and combined optical and x-ray spectroscopy.
文摘Ⅰ. INTRODUCTION It has been proved that YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> superconducting thin films can be epitaxially grown on SrTiO<sub>3</sub> by dc magnetron sputtering method with good lattice match along the axes However, for the epitaxial growth of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> superconducting thin film on Zr（Y）O<sub>2</sub>, its[100] direction is parallel to the[110] direction of Zr（Y）O<sub>2</sub> in stead of the lattice matching along the axes, which is due to the big mismatch between YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub>
文摘Ⅰ. INTRODUCTIONX. D. Xiang et al. have reported the preliminary structural characteristics of the iodine intercalated Bi_2Sr_2Ca_1Cu_2O_y high T_c superconductors. The cell dimension along c direction is expanded from 30.80 to 37.78 after iodine is intercalated. They suggested that an iodinelayer addition with 3.5 thickness is inserted into the host crystal perpendicular to c direction. The transition temperature of the host superconductor is ranged from 82 to 90 K.
