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Molecular Electrical Conductor Ni(C_3S_5)_2

Hong LEI (Dept. of Electronic Engineering , Shandong University , Jinan 250100 , China)Qi FANG and Minhua JIANG (Institute of Crystal Materials , Shandong University , Jinan 250100 , China)Yueming SUN (Dept. of Chemistry Southeast University Nanjing 210093 , Chi

材料科学技术（英）

The molecular based electrical conductor Ni(C3S5)2 has been prepared and its conductivity has been measured from room temperature down to 60 K. Above 167 K Ni(C3S5)2 exhibits a semiconductive behaviour, below this temperature it turns to exhibit metallic conductivity. Based on a tight-binding energy band calculation, an expression for the number of conducting electrons has been deduced. The calculated conducting activation energy is quite well in accordance with the measuring value.

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Glass Formation and Thermal Stability in Rapidly Solidified Al-Fe-V-Si Alloy with Misch Metal Additions

Jianqiang WANG , Meiguang ZENG (M.K.Tseng) and Xiufang CHEN(Dept. of Material Science , College of Science , Northeastern University , Shenyang 110006 , China)Lin DONG and Shixu GU(Liaoning Province Center of Analysis and Testing Research , Shenyang 110015 , Chi

材料科学技术（英）

A new amorphous Al87.3Fe4.3V0.7Si1.7Mm6.0(Mm: misch metal) was prepared by using melt-spinning technique. Differential scanning calorimetry (DSC), X-ray diffraction (XRD). transmis-sion electron microscopy (TEM) and energy dispersive X-ray (EDX) have been used to investigatethe crystallization behaviour of thi5 amorphous alloy It is found that the crystallization processcan be concluded as follows: amorphous→ amorphous plus fcc-Al→ fcc-Al plus AI11(La,Ce)3plus i-phase (icosahedral)→ fcc-Al plus Al11(La,Ce)3 plus i-phase plus ic-phase (icosahedralcompounds). The results of microhardness measurement show that HV values are higher thanthose in Al-Fe-V-Si based alloy and the maximum HV value corresponds to the coexisting ofnanoscale Al particles and i-phase.

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Structure Transition of Nanocrystalline Fe_2O_3

Jian SHA , Xisheng YE , Bin CHEN , Qirui ZHANG and Zhengkuan JIAO(Dept. of Physics , Zhejiang University Hangzhou 310027 , China)Guanglie LU(Central Lab. , Hangzhou University Hangzhou 310028 , China)Zifen PENG and Lide ZHANG(Institute of Solid State Physics , Chi

材料科学技术（英）

A structure transition of Fe2O3 nanocrystal was studied by using DTA and TG thermal analysis and X-ray diffraction method. We found that size increase of the nanocrystals is larger after the structure transition than that before the transition. It means that the structure transition is beneficial on growth of nanocrystals

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