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The Effect of High Co Addition on the Properties of Fe_{79}Zr_{9}B_{12} and Fe_{76}Zr_{9}B_{15} Alloys

100%
Yu W., Long D., Liu Y., Sun Y., Hua Z.
Acta Physica Polonica A
|
2015
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vol. 128
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issue 3
340-342
EN
Thermal properties, microstructure and magnetic properties of Fe_{79}Zr_{9}B_{12}, Fe_{76}Zr_{9}B_{15}, Fe_{39.5}Co_{39.5}Zr_{9}B_{12} and Fe_{38}Co_{38}Zr_{9}B_{15} alloys were investigated by differential thermal analysis, X-ray diffraction and vibrating sample magnetometer. High Co addition has a significant impact on the properties of alloys. High Co addition increases the main crystallization peak temperature and the crystallization activation energy. Moreover, high Co addition changes the crystallization products and influences the crystallization processes of Fe_{79}Zr_{9}B_{12} and Fe_{76}Zr_{9}B_{15} alloys. The specific saturation magnetization (M_{s}) increases and coercivity (H_{c}) decreases by high Co additions.
2
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The Influence of Cycle Sputtering Deposition on the Properties of Cu₂ZnSnS₄ Thin Films

86%
Sun Y., Yao B., Long D., Meng X., Liu L., Hua Z.
Acta Physica Polonica A
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2016
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vol. 129
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issue 6
1169-1172
EN
Three kinds of precursor thin films with stacking orders of Cu/Sn/ZnS, Cu/Sn/ZnS/Cu/Sn/ZnS and Cu/Sn/ZnS/Cu/Sn/ZnS/Cu/Sn/ZnS were prepared by magnetron sputtering and annealed with sulfur powder. The microstructure, morphology and optical properties of thin films were investigated by X-ray diffraction, the Raman scattering, scanning electron microscopy and UV-visible spectrophotometer. The increase of cycle number decreases the sulfurizing temperature of the formation of Cu₂ZnSnS₄ phase. Chemical composition can be controlled by cycle sputtering deposition. After sulfurizing at 500°C, the particle size and the band gap increase with increasing cycle number.
3
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Effect of Annealing Temperature and Ambient on Formation, Composition and Bandgap of Cu_2ZnSnS_4 Thin Films

86%
Sun Y., Yao B., Meng X., Wang D., Long D., Hua Z.
Acta Physica Polonica A
|
2014
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vol. 126
|
issue 3
751-756
EN
Amorphous Cu-Zn-Sn-S precursor films were prepared by sol-gel and spin-coating with copper chloride, zinc chloride, tin chloride and thiourea solutions as starting materials. A Cu_2ZnSnS_4 film with kesterite structure and a small amount of chlorine formed when the precursor was annealed under Ar ambient at temperature above 200°C, but its atomic ratios of Cu:Zn:Sn:S far deviated from stoichiometric ratios of the Cu_2ZnSnS_4. However, when the precursor films were annealed with sulfur powder together at temperatures between 360 and 480°C, the CZTS film containing a very small amount of Cl formed, and its atomic ratio change little for Cu, Zn, and Sn, increases for S and decreases for Cl with increasing temperature. When the temperature is 480°C, a CZTS only has Cu, Zn, Sn, and S element is fabricated, and the atomic ratio of Cu:Zn:Sn:S is near the stoichiometric ratio. The bandgap of the CZTS decreases with increasing annealing temperature. The mechanisms of the formation and the properties of the CZTS are suggested in the present work.
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