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Efficient and stable perovskite–silicon two-terminal tandem solar cellsMustafa Haider,Jun-Liang YangState Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University摘 要:<正>In the past several years, perovskite solar cells (PSCs)exhibited unexpected breakthrough and rapid evolution,and the power conversion......
Magnetocaloric and Colossal Magnetoresistance Effect in Layered Perovskite La1.4 Sr1.6Mn2O7Li an Han 1,2) and Changle Chen 1) 1) School of science,Northwestern Polytechnical University,Xi... of the layered perovskite La 1.4 Sr 1.6 Mn 2 O 7 compound have been studied.A broad peak of magnetic entropy change (-△S M) is found above the Curie temperature (T C =120 K),which can be associated......
">The effects of the calcination temperature on the oxygen content and magnetic properties of the nanocrystalline perovskite manganite La0.75Sr0.25MnO3±dprepared by the sol–gel method were... perovskite structure. As the calcination temperature and calcination time increase, the oxygen content in the samples increases from being deficient to being in excess of that in the stoichiometric......
Conductivity of F-doped New Perovskite Lithium Fast Ion Conductor Based on Li3xLa2/3-xTiO3张玉荣,陈宇摘 要:New perovskite lithium ion conductors with nominal formula of Li4xLa2/3-xTiO3Fx were prepared by solid state reaction. XRD analysis shows that a tetragonal perovskite-structured phase exits in the studied composition range of 0.05≤x≤0.14......
复合相结构钙钛矿锰氧化物低场磁电阻效应 吕莉1,羊新胜1,赵勇1,杨立芹1 (1.西南交通大学超导中心,成都,610031) 摘要:阐述了低场磁电阻及其产生的物理机制,综述了国内外近年来在复合相钙钛矿锰氧化物低场磁电阻增强这一研究领域的进展及其存在的问题.在母相中添加第二相物质形成复合相结构是低场增强磁电阻最简单和有效的方法.结合实践需要和自身研究结果提出制备复合相钙钛矿锰氧化物的新方法,即粘接法,用此方法制备出的复相材料具有很好的应用潜力. 关键词:钙钛矿锰氧化物; 低场磁电阻; 复合相体系; perovskite manganese oxides; low-field magnetoresistance; two-phase composites; [全文内容正在添加中] ......
磁性钙钛矿型氧化物的研究进展 霍国燕1,王烨2,董福营3 (1.河北大学化学与环境科学学院,保定,071002;2.漯河医学高等专科学校,漯河,462002;3.山东交通学院信息工程系,济南,250023) 摘要:综述了研究钙钛矿型氧化物的一些成果,通过介绍钙钛矿型氧化物的结构,磁电性质,归纳了该系列材料共同遵循的一些特征.分别对研究钙钛矿型氧化物的掺杂方法,主要的合成方法进行了对比,期望阐明研究出该类型材料的有益方法,以获得性能更优异的材料. 关键词:钙钛矿型氧化物; 庞磁电阻效应; 双交换作用; 小极化子; perovskite oxide; colossal magnetoresistance; double exchange; polaron; [全文内容正在添加中] ......
Synthesis and enhanced luminescence properties of double perovskite NaLa0.95-xYxEu0.05MgWO6 phosphorsJing Zhang1,2,Jia-Lin Shen1,2,Nai-Cen Xu1,21. Nanjing Center,China Geological Survey2. Supervision and Testing Center of East China,Mineral Resources of the Ministry of Land and Resources摘 要:Double perovskite Na(La,Y)MgWO6:Eu3+phosphors were obtained......
Perovskite type lanthanum manganite:Morpho-structural analysis and electrical investigationsPaula Sfirloaga1,Maria Poienar1,Iosif Malaescu2,Antoanetta Lungu1,Paulina Vlazan1摘 要:Perovskite-type oxides of LaMnO3 were synthesized by means of the sol-gel method, in the presence of citric acid as gelling agent. The precursors used were Mn(NO3)2·H2O, La2O3......
Perovskite type lanthanum manganite:Morpho-structural analysis and electrical investigationsPaula Sfirloaga1,Maria Poienar1,Iosif Malaescu2,Antoanetta Lungu1,Paulina Vlazan1摘 要:Perovskite-type oxides of LaMnO3 were synthesized by means of the sol-gel method, in the presence of citric acid as gelling agent. The precursors used were Mn(NO3)2·H2O, La2O3......
铋含量对钛酸镧铋陶瓷结构和介电性能的影响 方频阳1,樊慧庆1 (1.西北工业大学材料学院,凝固技术国家重点实验室,陕西,西安,710072) 摘要:通过固相合成的方法制备了Bi3.25LaxTi3O12(x=0.98~1.03,简称BLT)陶瓷.通过XRD,SEM和阻抗分析仪表征了陶瓷的晶体结构和晶体形貌,测试了陶瓷的介电频谱,结果表明陶瓷的晶体结构为典型的层状钙钛矿结构且不随Bi含量和温度的变化而改变;随着Bi含量的增加晶体形貌由棒状颗粒向片状颗粒转变,而且陶瓷的致密度也得到提高;介电常数随Bi含量的增加先增大后减小,并且在x=1.02时达到最大值. 关键词:铋层状钙钛矿结构; BLT; 介电性能; 铁电陶瓷; Bi-layer perovskite structure; BLT; dielectric properties; ferroelectric ceramics......
