Precipitation behaviors of Cu and Ni on Frank-type partial dislocations in Czochralski-grown silicon are investigated.It is found that Cu develops precipitate colonies in the region away from Frank,partials and does n...Precipitation behaviors of Cu and Ni on Frank-type partial dislocations in Czochralski-grown silicon are investigated.It is found that Cu develops precipitate colonies in the region away from Frank,partials and does not decorate Frank partials when the specimens are cooled slowly^while Ni decorates thein although the concen-tration of Ni is lower than that of Cu in the specimens.The results indicate that Ni impurity is easier to decorate Frank partials than Cu impurity in Si.展开更多
Ⅰ. INTRODUCTION Since the Cooper pair tunnelling effect was predicted in 1962 and experimentally proved in 1963, study of superconducting thin films has developed vigorously in view of the wide application potentiali...Ⅰ. INTRODUCTION Since the Cooper pair tunnelling effect was predicted in 1962 and experimentally proved in 1963, study of superconducting thin films has developed vigorously in view of the wide application potentiality of SQUIDs. So far, the superconducting thin films used in Josephson devices are pure metals and alloys with T_c≤16 K and are able to function only under costly liquid helium conditions.展开更多
文摘Precipitation behaviors of Cu and Ni on Frank-type partial dislocations in Czochralski-grown silicon are investigated.It is found that Cu develops precipitate colonies in the region away from Frank,partials and does not decorate Frank partials when the specimens are cooled slowly^while Ni decorates thein although the concen-tration of Ni is lower than that of Cu in the specimens.The results indicate that Ni impurity is easier to decorate Frank partials than Cu impurity in Si.
文摘Ⅰ. INTRODUCTION Since the Cooper pair tunnelling effect was predicted in 1962 and experimentally proved in 1963, study of superconducting thin films has developed vigorously in view of the wide application potentiality of SQUIDs. So far, the superconducting thin films used in Josephson devices are pure metals and alloys with T_c≤16 K and are able to function only under costly liquid helium conditions.
