检索结果-南通市图书馆

Effect of Zn Doping on Transport Properties of La_(2/3)Sr_(1/3)Mn_(1-x)Zn_xO_3 Films

Journal of Rare Earths 2007年第6期25卷 734-738页

作者：赵省贵陈长乐金克新 Department of Applied Physics Northwestern Polytechnical University Department of Basic Sciences Xi'an University of Science and Technology

La2/3 Sr1/3 Mn1-x ZnxO3films （x =0.05, 0.1,0.3, and 0.5） were prepared using magnetron sputtering method, and the effect of Zn doping on transport properties of the films was studied. An analysis of X-ray diffraction showed that the main phase of the bulk target was orthorhombic and the films had better epitaxial character. It was found that the films with x =0.05 and x =0.1 exhibited typical insulator-metal transition. No transition of the films with x≥0.3 was observed and the dominant transport was variable-range hopping due to observable secondary phase ZnO. These could be attributed to the Zn doping effect on manganites.

关键词： manganites thin film transport properties double exchange interaction rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A potential-driven switch of activity promotion mode for the oxygen evolution reaction at Co_(3)O_(4)/NiO_(x)H_(y) interface

引用

eScience 2022年第4期2卷 438-444页

作者： Wang Wang Zixu Wang Youcheng Hu Yucheng Liu Shengli Chen Electrochemical Power Sources Key Laboratory Department of ChemistryWuhan UniversityWuhan430072China Wuhan University Testing Center Wuhan UniversityWuhan430072China

Co_(3)O_(4)spinel oxides have manifested promising activity toward the oxygen evolution reaction(OER)through effective *** them to become top electrocatalysts,however,accurate accounts of the catalytic kinetics are essential to gain a deep understanding of the activity promotion ***,we use a newly proposed kinetic model based on energetic span as the rate-determining term for the electrocatalytic reaction to throw light on the promotion mechanism of Co_(3)O_(4)interfaced with nickel hydroxides(NiO_(x)H_(y))for the *** find that depending on the electrode potential,the OER kinetics at the designed interface between Co_(3)O_(4)and NiO_(x)H_(y)are boosted in entirely different *** a result,the OER can occur at a lower onset potential as well as a low Tafel *** work emphasizes the benefit of using rational theoretical models for electrocatalyst design.

关键词： Oxygen evolution reaction Interface engineering double exchange interaction Potential-driven switch of mechanism Energetic span

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Magnetic properties of Nd0.5Pb0.5—xSrxMnO3 materials

引用

Chinese Physics B 2003年第7期12卷 789-791页

作者：鲁毅李庆安邸乃力马骁寇志起罗志成昭华 StateKeyLaboratoryofMagnetism InstituteofPhysicsChineseAcademyofSciencesBeijing100080China

The structure and magnetic properties of Nd0.5Pb0.5-xSrxMnO3 (0 ≤ x ≤0.4) manganites were systematicallyinvestigated. Significant changes in Curie temperature and metal-insulator (MI) transition temperature of the sampleswere observed. All samples exhibited a transition from paramagnetic semiconducting to ferromagnetic metallic *** temperature TC and the MI transition temperature Tp increased with increasing Sr content. We attributed thesebehaviours to the enhancing of both the double exchange mechanism and the Jahn-Teller electron-phonon coupling.

关键词： structure magnetic properties double exchange interaction transition temperature Tp Jahn-Teller distortion neutron diffraction.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：