Ⅰ. INTRODUCTION Recendy, the research on oxide superconductor has achieved tremendous progress. New records of critical temperature were reported. In this work, the resistivity of Ba-Y-Cu oxide supercondutor and its ...Ⅰ. INTRODUCTION Recendy, the research on oxide superconductor has achieved tremendous progress. New records of critical temperature were reported. In this work, the resistivity of Ba-Y-Cu oxide supercondutor and its density of critical current as a function of temperature are measured by the method of persistent current.展开更多
Self-pumped and mutually-pumped phase conjugations have been the most intensively investigated photorefractive phenomena in recent years.Various photorefractive crystals （BaTiO<sub>3</sub>, SBN, BTO, etc....Self-pumped and mutually-pumped phase conjugations have been the most intensively investigated photorefractive phenomena in recent years.Various photorefractive crystals （BaTiO<sub>3</sub>, SBN, BTO, etc., doped or nominally undoped）展开更多
文摘Ⅰ. INTRODUCTION Recendy, the research on oxide superconductor has achieved tremendous progress. New records of critical temperature were reported. In this work, the resistivity of Ba-Y-Cu oxide supercondutor and its density of critical current as a function of temperature are measured by the method of persistent current.
文摘Self-pumped and mutually-pumped phase conjugations have been the most intensively investigated photorefractive phenomena in recent years.Various photorefractive crystals （BaTiO<sub>3</sub>, SBN, BTO, etc., doped or nominally undoped）
