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Article
Enhanced thermoelectric performance of tin oxide through antimony do** and introducing pore structures
Antimony-doped tin oxide nanopowders were synthesized by the hydrothermal method. Porous antimony-doped tin oxide ceramics with variant porosity were obtained by controlling the spark plasma sintering temperat...
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Article
Role of vacancy defects on the lattice thermal conductivity in In2O3 thermoelectric nanocrystals: a positron annihilation study
High purity \(\hbox {In}_2\hbox {O}_3\) ...
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Article
Vacancy-mediated ferromagnetism in Co-implanted ZnO studied using a slow positron beam
Co \(^+\) + ...
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Article
Reversible structural transition in spark plasma-sintered thermoelectric Zn4Sb3
Thermoelectric Zn4Sb3 prepared by spark plasma sintering (SPS) method has been studied by X-ray diffraction (XRD) and positron annihilation spectroscopy. A reversible structural transformation between β-Zn4Sb3 an...
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Article
Defects and acceptor centers in ZnO introduced by C+-implantation
ZnO single crystals were implanted with 280 keV C+ to a dose of 6 × 1016 cm−2. Positron annihilation measurements reveal a large number of vacancy clusters in the implanted sample. They further agglomerate into l...
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Article
Effect of defect associate on the electrical properties of Nb-doped yttrium-stabilized zirconium