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ion-conductor
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  离子导体
     A STUDY ON THE SPECTRUM OF Agl(Cr_2O_3) COMPOSITE ION-CONDUCTOR
     AgI(Cr_2O_3)复合离子导体的光谱研究
短句来源
     In this paper, we present the study on the infrared absorption spectrum, near ultraviolet region and visible region reflection spectrum of Agl(Cr2O3) composite ion-conductor.
     本文研究了AgI(Cr_2O_3)复合离子导体的红外吸收光谱,近紫外、可见反射光谱。
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  相似匹配句对
     ION BEEN OXIDATION
     离子束氧化
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     BIOACCUMULATION OF CADMIUM ION
     镉离子的生物富集
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     ION-CHANNEL LASER
     离子通道激光
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     Development of Ion-sulphurizing
     离子渗硫技术进展
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     SOLDERABILITY OF FILM CONDUCTOR
     膜电路导体的焊接性
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As a result of periodic lattice potential of cage ions, the energy levels of mobile ions in superionic conductors are analogous to the band structure of electrons in semiconductors. The mobile ions in ionic conduction band contribute to ionic conductivity while ions of the same species in ionic valence band do not. The ionic crystals and even some crystals with covalent bonds of polar nature may be classified according to the width of ionic bandgaps. Most of ionic crystals of which the bandgap is too wide to...

As a result of periodic lattice potential of cage ions, the energy levels of mobile ions in superionic conductors are analogous to the band structure of electrons in semiconductors. The mobile ions in ionic conduction band contribute to ionic conductivity while ions of the same species in ionic valence band do not. The ionic crystals and even some crystals with covalent bonds of polar nature may be classified according to the width of ionic bandgaps. Most of ionic crystals of which the bandgap is too wide to allow ions to transit from VB into CB under thermal excitaion at the temperature below their melting points will show no or only little ionic conductivity. Only few of those with narrow bandgap shows appreciable ionic conductivity far below their melting points or even at room temperature and will be termed as superionic conductors.Arrhenius behaviour of ionic conductivity which is analogous to that of eletronic conductivity of semiconductors proves similar mechanism of conductivity. In addition, the ion band of superionic conductors may also be used to explain other properties of superionic conductors including phase transition, variation of ionic conductivity with composition etc.Six different types of superionic conductors have been discussed in terms of the ion band model:a. Intrinsic conductors e. g. Ag~+ ion conductors.b. Imperfect superionic conductors e. g. superionic conductors with impurities as acceptors or donors and/or with interstitials and vacancies.c. Superionic conductors with layer structure, e. g. β-Alumina.d. Non-crystalline solid electrolytes.e. Solid electrolytes with oriented dipoles e. g. LiX-Al_2O_3 etc.f. Electron-ion mixed conductors.In dealing with the solid electrolytes with oriented dipoles, comparison has been made of solid electrolytes with molten salts and electrolytic solutions. They can be expected to be treated by means of ion band model in a unified way.

在Rice和Roth的自由离子模型和Flynn的离子极化子模型的基础上,根据骨架离子周期势场中薛定谔方程的布洛赫解,提出与半导体的能带模型相类似的离子能带模型,来解释离子晶体与固体电解质的区别,固体电解质的相变,本征快离子导体和缺陷型快离子导体的区别,电子—离子混合导体中离子电导与电子电导的关系以及同一种组成的快离子导体在晶态和非晶态电学性质的差别。强电解质溶液的理论可以从离子能带模型进行解释,并可从这种解释出发,寻找合适的定向偶极子来提高室温下的离子晶体的电导率。

The effects of pressure (up to 10.9 kbar) on the conductivity and crystallization temperature (T_c) of amorphous fast-ion conductor (AgI)_(0.788)(Ag_2O·B_2O_3)_(0.212) has been investigated. It was found that the conductance decreases with the pressure, and a kink exists on the curve of eonductance versus pressure near 5.0 kbar for pellet shaped specimens. It was discovered by DTA that the T_c of the specimens was decreased through high pressure treatment, and the T_c lower as the pressure goes higher.

研究了压力(高达10.9kbar)对非晶态快离子导体(AgI)_(0.788)(Ag_2O·B_2O_3)_(0.212)的室温电导率及晶化温度T_c的影响。压片样品的电导和压力的关系表明,随压力增加,其电导下降,而且在5.0kbar附近出现转折点.在室温13℃±2℃时,常压—5.0 kbar及5.0—9.0 kbar下的激活体积分别为1.34cm~3mol~(-1)和1.92cm~3mol~(-1)。样品经高压处理后在常压下的差热分析表明其T_c有所降低,而且压力愈大,T_c就愈低。

NASICON type fast ion conductors of Na1+xZr2-yTiySixP3-xO12 were synthesized and formed mixtures of Na3PO4-ZrP2O7-SiO2-ZrO2-TiO2 in platinum vessel at temperature of 1173K - 1473K for several hours to 20 hours(40 hours for a few of samples). A single pure phase (labelled phase 211) was found in the x=1.0, y=1.0. A second pure phase (labelled phase 202) was found with x= 1.0, y = 2?. The conductivities and activation energies of both phase 211 and phase 202 were measured.

以Na_3PO_4、ZrP_2O_7、SiO_2、ZrO_2、TiO_2为反应原料,在1173K—1473K的高温下进行固相反应,制备了钠快离子导体Na_(1+x)Zr_(2-y)Ti_ySi_xP_(3-x)O_(12)系统中x=1、y=0—2.0的一系列合成物。研究了它们的相变关系;测定了两个单纯相—211相和202相的电导率和电导激活能。 室温时,211相的电导率σ_(RT)=1.52×10~(-4)(Ω·cm)~(-1),202相的σ_(TR)=0.53×10~(-4)(Ω·cm)~(-1);623K时,211相的电导率σ_(623)=1.21×10~(-1)(Ω·cm)~(-1),202相的σ_(623)=0.88×10~(-2)(Ω·cm)~(-1)。 在523K~673K温区里,211相的电导激活能E_a为31.87kJ/mole,202相的E_a为33.16kJ/mole。

 
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