Grain Boundary Dependence of Dopant Segregation and Electrical Property in ZnO
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چکیده
منابع مشابه
Applied Thermodynamics: Grain Boundary Segregation
Chemical composition of interfaces—free surfaces and grain boundaries—is generally described by the Langmuir–McLean segregation isotherm controlled by Gibbs energy of segregation. Various components of the Gibbs energy of segregation, the standard and the excess ones as well as other thermodynamic state functions—enthalpy, entropy and volume—of interfacial segregation are derived and their phys...
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Grain boundary segregation of boron in nickel has been investigated using secondary ion mass spectrometry and FIM-AP techniques. Preliminary results show that segregation is of the equilibrium type which means that boron was concentrated to a few atomic layers at the grain boundaries and that the amount of segregation increased with decreasing annealing temperature.
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D PR O Abstract The factors which control grain boundary segregation in oxide ceramics are reviewed. These include grain boundary energy, cation–cation interactions, impurity cation size, as well as electrostatic interactions with the grain boundary space charge. In addition, an approach for measuring grain boundary segregation in those materials, as a function of the five macroscopic parameter...
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The aim of this chapter is to shed light on the effects of grain boundary segregation on microstructural evolution in nanostructured metallic materials as well as on their mechanical properties. Several key topics will be covered. First, a brief explanation of mechanical stress-driven grain growth in nanostructured Al, Ni, and Cu thin films will be provided in terms of a deformation mechanism m...
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Article history: Received 10 February 2016 Received in revised form 22 May 2016 Accepted 8 June 2016 Available online xxxx The relationships betweenmicrostructure, controlled by alloying elements prone to grain boundary segregation, and electrical resistivity in sputtered nanocrystalline Cu were investigated. We find a non-monotonic dependence of themean grain size on solute concentration for b...
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ژورنال
عنوان ژورنال: Materia Japan
سال: 2005
ISSN: 1340-2625,1884-5843
DOI: 10.2320/materia.44.965