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Diffusion coefficient of Ti^4+ in calcium ferrite/calcium titanate diffusion couple

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International Journal of Minerals,Metallurgy and Materials 2020年第9期27卷 1216-1225页

作者： Wang Wei Hong-rui yue Xiang-xin Xue School of Metallurgy Northeastern UniversityShenyang 110819China

This study investigated the interdiffusion of calcium ferrite/calcium titanate system in the time range of 0-120 min by the diffusion couple method in a CO/N2 reducing atmosphere at 700℃.The results show that after the diffusion reaction occurred,no longitudinal agglomerations were present on the substrate surface on the calcium titanate *** the diffusion time was increased to 105 min,a net vacancy flow from calcium titanate to calcium ferrite might have occurred,causing the surface of the calcium ferrite substrate to *** thickness of the diffusion layer of the calcium ferrite/calcium titanate system was about 17-48μm,which conforms to the parabolic law of *** diffusion coefficient and the Ti^4+concentration in the calcium ferrite/calcium titanate system are *** shows an increase in the diffusion coefficient with the increase of Ti^4+concentration,and the diffusion coefficient value was in the range of 10^−12-10^−11 cm^2·s^−1.

关键词： vanadium-titanium sinter diffusion couple calcium ferrite calcium titanate diffusion coefficient

Algebraic Bethe Ansatz for the Osp(1|2) Model with Reflecting Boundaries

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Communications in Theoretical Physics 2001年第7期36卷 19-24页

作者： yue rui-Hong XIONG Chuan-Hua Institute of Modern Physics Northwest University Xi''an 710069 China Institute of Modern Physics Northwest University Xi''an 710069 China

In the framework of graded quantum inverse scattering method, we obtain the eigenvalues and the eigenvectors of the Osp(l|2) model with reflecting boundary conditions in FBF background. The corresponding Bathe ansatz ... 详细信息

关键词： Osp(1|2), algebraic Bethe ansatz, reflection equation

Lax Connection of Strings in γ-Deformed Backgrounds

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Communications in Theoretical Physics 2008年第5期49卷 1265-1268页

作者： XIE Xiao-Ning yue rui-Hong SKLLQG Institute of Earth Environment the Chinese Academy of Sciences Xi＇an 710015 China Institute of Modern Physics Northwest University Xi＇an 710069 China Department of Physics Ningbo University Ningbo 315211 China

In this paper we consider classical strings propagating in γ-deformed AdS3 × S^3 backgrounds generated by TsT transformation on the AdS3 sector, which is described as the group manifold SL（2, R）, then we prove that the U（1） currents of strings with the twisted boundary conditions are equal to those in γ-deformed backgrounds. Using TsT transformation, we can derive the local Lax connection and the monodromy matrix in γ-deformed backgrounds with the spectral parameter, which ensures the classical integrability of the string theories.

关键词： TsT transformation Lax connection monodromy matrix integrability

General Solutions of Reflection Equations for Bariev Model

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Communications in Theoretical Physics 2008年第1期49卷 159-165页

作者： WANG Chun KE San-Min yue rui-Hong College of Science Xi＇an Shiyou University Xi＇an 710065 China Institute of Modern Physics Northwest University Xi＇an 710069 China

The integrable general open-boundary conditions for the one-dimensional Bariev chain are considered. All kinds of solutions to the reflection equation （RE） and its dual are obtained.

关键词： Bariev model reflection equation non-diagonal solution

Thermodynamics of 1D N-Component Bariev Model Under Open Boundary Conditions

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Communications in Theoretical Physics 2006年第2X期46卷 253-260页

作者： WANG Chun KE San-Min yue rui-Hong School of Science Xi'an Shiyou University Xi'an 710065 China Institute of Modern Physics Northwest University Xi'an 7100693 China Department of Physics Northwest University Xi'an 710069 China

The thermodynamic Bethe ansatz equations and free energy for 1D N-component Bariev model under open boundary conditions are derived based on the string hypothesis for both, a repulsive and an attractive interaction. T... 详细信息

关键词： thermodynamics N-component Bariev model open boundary

Exact Solutions of One-Dimensional N-Component Bariev Model with General Boundary Conditions

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Communications in Theoretical Physics 2006年第4X期46卷 755-760页

作者： KE San-Min WANG Chun yue rui-Hong Institute of Modern Physics Northwest University Xi'an 710069 China College of Science Xi'an Shiyou University Xi'an 710065 China

The N-component Bariev model for correlated hopping with open boundary conditions in one dimension is studied in the framework of coordinate Bethe ansatz method. The energy spectrum, integrable boundary conditions and... 详细信息

关键词： coordinate Bethe ansatz open-boundary conditions N-component Bariev model

Boundary Correlation Functions of the gl(1|1) Supersymmetric Vertex Model

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Communications in Theoretical Physics 2008年第7期50卷 17-22页

作者： ZHANG Chen-Jun ZHOU Jian-Hua yue rui-Hong Institute of Modern Physics Northwest University Xi＇an 710069 China

The gl（1/1） supersymmetric vertex model with domain wall boundary conditions （DWBC） on an N × N square lattice is considered. We derive the reduction formulae for the one-point boundary correlation functions of t... 详细信息

关键词： domain wall boundary conditions partition function boundary correlation function

Center for Elliptic Quantum Group Eτ，η(sln)

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Communications in Theoretical Physics 2003年第1期39卷 67-72页

作者： Zhao Shao-You Shi Kang-Jie yue rui-Hong Department of Physics Beijing Institute of Technology Beijing 100081 China Institute of Modern Physics Northwest University Xi'an 710069 China

We give the center of the elliptic quantum group in general cases. Based on the dynamical Yang-Baxter relation and the fusion method, we prove that the center commutes with all generators of the elliptic quantum group. Then for a kind of assumed form of these generators, we find that the coefficients of these generators form a new type of closed algebra. We also give the center for the algebra.

关键词：凝聚物理椭圆量子群 YangBaxter关系式

Thermodynamics of Third Order Lovelock Anti-de Sitter Black Holes Revisited

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Communications in Theoretical Physics 2011年第3期55卷 449-456页

作者： ZOU De-Cheng yue rui-Hong YANG Zhan-Ying Department of Physics Northwest University Xi＇an 710069 China Faculty of Science Ningbo University Ningbo 315211 China

We compute the mass and temperature of third order Lovelock black holes with negative Gauss-Bonnet coefficient a2 〈 0 in anti-de Sitter space and perform the stability analysis of topological black holes. When k = -1, the third order Lovelock black holes are thermodynamically stable for the whole range r＋. When k = 1, we found that the black hole has an intermediate unstable phase for D = 7. In eight dimensional spacetimes, however, a new phase of thermodynamically unstable small black holes appears if the coefficient a is under a critical value. For D ≥ 9, black holes have similar the distributions of thermodynamically stable regions to the case where the coefficient ＆ is under a critical value for D = 8. It is worth to mention that all the thermodynamic and conserved quantities of the black holes with fiat horizon do not depend on the Loveloek coefficients and are the same as those of black holes in general gravity.

关键词： third order Lovelock gravity AdS space thermodynamics