欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用乙二胺四乙酸-柠檬酸联合溶胶凝胶法合成了B位掺镁的简单钙钛矿纯相样品LaMn1-xMgxO3（x=0-0．50）．Mg在钙钛矿B位的掺杂和调节Mn^3＋／Mn^4＋的摩尔比强烈地影响样品的磁性行为．x≤0．08时，样品低温下表现弱的铁磁性；x≥0．18时，随着Mg掺杂引入的Mn^4＋离子间的反铁磁性超交换作用与Mn^3＋-Mn^4＋离子间的铁磁性双交换作用使样品在低温下呈现自旋玻璃态．随着Mg^2＋掺杂量的增加，样品的磁有序温度与自旋凝固温度单调降低．
英文摘要：
The substitution of Mn with Mg in LaMnO3 strongly affects the magnetic properties at low temperature and the crystal structure of the LaMn1-xMgxO3 system. Sample displays weak ferromagnetic at low temperature when x≤0. 08, and the spin-glass state was observed at low temperature when x≥0. 18; the existance of nonferromagnetic Mg^2＋ ions in perovskite B site is an important factor for magnetic behavior at low temperature of LaMn1-xMgxO3 samples. Magnetic ordered temperature and spin frozen temperature monotonously decrease with the increase of Mg-substitution.
同期刊论文项目
同项目期刊论文
Hydrothermal Synthesis of a CaNb2O6 Hierarchical Micro/Nanostructure and Its Enhanced Photocatalytic
Resolving the Enigma of Prebiotic C-O-P Bond Formation: Prebiotic Hydrothermal Synthesis of Importan
Helical chain observed under transmission electron microscope: Synthesis and structure refinement of
Primary Organicamine Templated Indium Iodate (H(2)en)KIn(IO3)(6)center dot 2(H2O) with Hydrogen-bond
Phase transition of BiVO4 nanoparticles in molten salt and the enhancement of visible-light photocat
Three oxidation states and atomic-scale p-n junctions in manganese perovskite oxide from hydrotherma
Magnetic properties of Ce,Gd-substituted yttrnium iron garnet ferrite powders fabricated using a sol
Synthesis and characterization of a one-dimensional coordination polymer generated from unsymmetrica
Structural and magnetic properties of Co-N thin films synthesized by direct current magnetron sputte
Mixed Solvothermal Synthesis and Characterization of Two Copper Coordination Polymers: Cu-3(2,2 '-bi
Hydrothermal synthesis and structure characterization of the first organically templated metal iodat
One-dimensional Coordination Polymers Generated from Organosulfur Ligand: Synthesis, Structure, Fluo
Influence of noncovalent intermolecular interactions on crystal packing: syntheses and crystal struc
Synthesis, structure and fluorescence properties of a highly stable indium(III)-2,5-pyridinedicarbox
Crystal growth and magnetic property of orthorhombic RMnO3 (R = Sm-Ho) perovskites by mild hydrother
Synthesis, structure characterization and magnetic properties of single crystal of dimanganese triox
期刊信息
位置：