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Redox Controllable Switch of Crystalline Phase and Physical Property in SrVO_x Epitaxial Films 被引量:1
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作者 Xue-jiao Gu Zhen-lin Luo +4 位作者 Yong-qi Dong Jing-tian Zhou Han Xu Bin Hong Chen Gao 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2019年第6期727-730,I0003,共5页
Transition-metal oxides have attracted much attention due to its abundant crystalline phases and intriguing physical properties. However, some of these compounds are difficult to be fabricated directly in film form du... Transition-metal oxides have attracted much attention due to its abundant crystalline phases and intriguing physical properties. However, some of these compounds are difficult to be fabricated directly in film form due to the ease of valence variation of transition-metal elements.In this work, we reveal the reversible structural transition between SrVO3 and Sr2V2O7 films via thermal treatment in oxygen atmosphere or in vacuum. Based on this, Sr2V2O7 epitaxial films are successfully synthesized and studied. Property characterizations show that the semitransparent and metallic SrVO3 could reversibly switch into transparent and insulating Sr2V2O7, implying potential applications in controllable electronic and optical devices. 展开更多
关键词 Transition-metal oxides Reversible transition Controllable electronic and optical devices
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从“门外汉”到程序员——从学校到工作过渡路径、影响因素与作用机制的质性分析 被引量:5
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作者 和震 贺世宇 《教育发展研究》 CSSCI 北大核心 2019年第1期47-54,共8页
对小猿从大学到工作的过渡经历考察发现:青年STW过渡历程并非线性,还可能有从工作场所返回受教育状态的"逆转过渡",过渡中交织着角色转变;借助生命周期-生命空间理论为分析视角,青年逆转过渡始于自我概念与当前职业角色的激... 对小猿从大学到工作的过渡经历考察发现:青年STW过渡历程并非线性,还可能有从工作场所返回受教育状态的"逆转过渡",过渡中交织着角色转变;借助生命周期-生命空间理论为分析视角,青年逆转过渡始于自我概念与当前职业角色的激烈冲突,"追求想要的生活"即强烈的兴趣和对自我需要的满足是青年做出逆转过渡决策及成功实现过渡的内在动力,生涯适应力是实现成功过渡的内在保障机制,并与情境因素(家庭、同辈群体、学校、社会文化等)互动共同作用于青年过渡过程。此发现结果提供了审视和反思教育改革的新视角。 展开更多
关键词 学校到工作 青年过渡 逆转过渡
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