Ⅰ. INTRODUCTION The study of ultrasonic speed in organic liquid is not only an effective method to gage macro thermodynamic properties of the liquid, but also a valuable way to understand micro information of the liq...Ⅰ. INTRODUCTION The study of ultrasonic speed in organic liquid is not only an effective method to gage macro thermodynamic properties of the liquid, but also a valuable way to understand micro information of the liquid in molecular physics. Many experiments showed that ultrasonic speed in organic liquid reduced in value with the increasing temperature and rose with the increasing pressure of the liquid. But up to now,展开更多
1 Introduction Substitution is an important approach to the research on mechanism of high-T<sub>c</sub>superconductivity and properties of superconducting materials. Due to the complexity ofBi-based compos...1 Introduction Substitution is an important approach to the research on mechanism of high-T<sub>c</sub>superconductivity and properties of superconducting materials. Due to the complexity ofBi-based compositions, most of the substitutional experiments have been carried out at theBi site and the Ca site of Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>x</sub>, and a few at the Cu site. In the Bi<sub>2</sub>Sr<sub>2</sub>Ca<sub>1-x</sub>展开更多
基金Project supported by the National Natural Science Foundation of China
文摘Ⅰ. INTRODUCTION The study of ultrasonic speed in organic liquid is not only an effective method to gage macro thermodynamic properties of the liquid, but also a valuable way to understand micro information of the liquid in molecular physics. Many experiments showed that ultrasonic speed in organic liquid reduced in value with the increasing temperature and rose with the increasing pressure of the liquid. But up to now,
文摘1 Introduction Substitution is an important approach to the research on mechanism of high-T<sub>c</sub>superconductivity and properties of superconducting materials. Due to the complexity ofBi-based compositions, most of the substitutional experiments have been carried out at theBi site and the Ca site of Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>x</sub>, and a few at the Cu site. In the Bi<sub>2</sub>Sr<sub>2</sub>Ca<sub>1-x</sub>
