Analyses show that the electrical conduction appear to occur via a small-polaron hopping mechanism,and in addition,1) the therm.
5)系材料电导率并探讨了它们的离子导电、电子导电的微观机制,指出除了小极化子导电机制外,还可能有以下几种机理共同作用:1)热激发引起Co3+离子的电荷歧化;2)高温下氧空位生成导致的离子补偿;3)Fe4+较Co4+优先进行电子补偿。
The temperature dependence of the resistivity of the samples was tested from the room temperature(25 ℃) to 300 ℃,and then confirmed using the small-polaron transport model.
测样品在常温(25℃)至300℃范围内的阻温特性,并利用小极化子导电模型进行验证。
Analyses indicate that the electrical conduction appears to occur via a small-polaron hopping mech.
XPS光电子能谱分析表明,除了存在小极化子导电机制外,同时还可能存在以下几种机理:1)热激发引起Co3+离子的电荷歧化;2)高温下氧空位生成导致的离子补偿;3)Fe4+较Co4+优先进行电荷补偿。
The result shows that from 200?℃ to 700?℃ the material is semiconduction, which is determined by the small polaron, and above 700～1?000?℃ the material emerges metal conduction.
2 MnO3 材料的电导温度特性 ,发现电导随温度变化可以分成两个区域 :在 2 0 0～70 0℃ ,材料表现为半导体导电 ,此时材料的导电性能主要是由小极化子导电决定 ;在 70 0～ 10 0 0℃ ,材料呈现出金属导电 ,这是由于温度的升高 ,电子获得足够大的能量后由局域态变为自由态或准自由
Using the small polaron theory, we interpreted the complex behavior of ρ-c .
我们利用小极化子理论解释了 ρc 的复杂行
Their electronic transport behavior in medium-low temperature region accords with the small polaron hopping mechanism.
结果表明:凝胶前驱体在850℃焙烧2 h可以形成颗粒细小(约20 nm)、完全晶化的纳米粉体;所有LSCF烧结体的电导率随温度的升高基本上都呈先增大后减小的趋势,并在650~750℃之间达到最大值,中低温段的电导率随温度的变化符合小极化子导电机理。
By means of the methodology of rough set,different attribute classification methods for decision systems are first analyzed in this paper,and the attribute significance as well as the extremely small subset of the attribute relative reduction caused by a classification variety is discussed.
应用粗糙集的方法,分析决策系统中不同的属性分类方法,以及不同分类方法引起的属性重要性与属性相对约简极小子集的变化情况,寻求属性分类方法与属性约简结果相互影响的内在因素,给出高效的属性分类方法和合理确定约简子集的策略,生成策略对应软件的实现算法,并运用软件实现算法来选取相对约简子集。
The two transport properties of small polaron in PM phase and single magneton in FM phase coexist at the temperature rang of phase transition.
在相变温区是顺磁相的小极化子与铁磁相的单磁子2种输运性质共存。
Maximum entropy particle swarm optimization for nonlinear l-1 norm minimization problem
非线性l-1模极小化问题的极大熵粒子群算法
Minimal Submanifolds and Calibrations;
极小子流形和Calibration
Why can tiny Arctic Village become the world s Arctic Village?--the brief for Chi Zijian s literary works;
小小的北极村,世界的北极村——迟子建文学创作的文化人类学简释
The Preparation and Research of Electrode for Catalyzing Organic Small Molecules;
有机小分子催化电极的制备及其催化性能研究
minimax entropy estimator
极小化极大熵估计量
Molecular Control of Aging and Fate of the First Polar Bodies of Mouse Oocytes;
小鼠卵母细胞老化的分子调控及第一极体命运
The particles in an atom are infinitely small.
原子里的粒子极小.
Electrocatalysis Study of Hydrogen Peroxide and Small Organic Matters on Chemically Modified Electrode;
化学修饰电极电催化过氧化氢、有机及生物小分子的研究
Influences of the Centralier and S-Normality of a Minimal Subgroup on the Structure of a Finite Group;
极小子群的中心化子及s正规性对群结构的影响
Study on Electrocatalytic Activities for Anodic Oxidation of Small Ogratic Molecules of Pt Composite Catalyts Prepared by Electrochemical Methods;
电化学方法制备Pt复合电极对有机小分子阳极氧化的电催化性能研究
The lad has a large conceit of himself.
那小伙子极为自命不凡。
a swell vacation, player, guy
极好的假期、 选手、 小伙子
But keen as mustard!
真叫小积极分子儿！
Study on the Electrocatalytic Oxidation of Small Organic Molecules on Electrodes Modified with Pd and Ni
有机小分子在钯、镍修饰电极上的电催化氧化研究
SUMT (Sequential Unconstrained Minimization Technique)
顺序无约束极小化技术
sequential unconstrained minimization technique
序贯无约束极小化方法
Electrochemical Behavior and Determination of Several Small Biomolecules at Carbon Nanotubes Modified Gold Electrodes;
几种生物小分子在碳纳米管修饰金电极上的电化学行为及测定