搜索结果: 1-4 共查到“凝聚态物理学 Mg”相关记录4条 . 查询时间(0.046 秒)
First-principles study on the magnetic properties in Mg dooped BiFeO3 with and without oxygen vacancies
Vacancies Magnesium Magnetic moments Antiferromagnetism Band gap
2016/12/2
The magnetic properties of Mg-doped BiFeO3 (BFO) with and without oxygen vacancies are studied through first-principles calculations. The Mg-doping prefers to occupy the ferromagnetic planes and produ...
机械合金化Al-Mg-Si-Cu元素粉末的特性
机械合金化 Al，Mg，Si和Cu元素粉末 物性 合金化特性
2010/3/9
Al，Mg，Si和Cu元素粉末按6061铝合金成分配比进行了机械合金化(MA)，对其物相、合金化特性、晶格常数、晶粒尺寸及点阵应变作了测定和分析讨论。MA初期晶粒尺寸可以达到纳米级，最小晶粒尺寸20nm；粉末点阵应变最终达0.2%；Al晶格常数变化的总趋势是不断减小；塑性较好的元素粉末可在“面上”作短程扩散，合金化易于进行，可实现完全合金化；硬度较高的脆性元素粉末只在“点上”作短程扩散，合金化不易...
Formation Energy in Al-Mg Alloy by Positron Annihilation Lifetime Technique (PALT)
Lifetime formation enthalpy point defects in Al-Mg alloys
2010/4/13
The propose of the present work is to study the interaction of positrons with quenched-in defects and clustered atoms to estimate formation enthalpy in series 50xx of commercial Al-Mg alloys, namely, ...
Cation Distribution and Magnetisation Study of Nd+3 Substituted Zn-Mg Ferrites
Polycrystalline Ferrite Cation distribution Magnetisation Weighted interaction Curie Temperature
2010/4/15
Polycrystalline ferrites ZnxMg1-xFe2-yNdyO4 (x = 0.00, 0.20, 0.40, 0.80 and 1.00; y = 0.00, 0.05 and 0.10) were prepared by standard ceramic method. Thecompositions,oncharacterisation by X-ray diffrac...