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Microstructure and magnetostrictive properties of Tb doped Fe–Ga bulk alloys prepared by melt quenching

Rare Metals 2014年第3期33卷 309-312页

作者： Shu-Xin Zhang Wei Wu Xiao-Xi Zhu Jing-Hua Liu Cheng-Bao Jiang School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics

The microstructure and magnetostrictive properties were investigated in the Tb doped Fe83Ga17-xTbx（x = 0.05, 0.10, 0.20, 0.30, 0.40, 0.50） bulk rods prepared by melt rapidly quenching. The partial solid solubility of Tb in the Fe-Ga matrix was preliminary detected by the lattice parameters and SEM observation. The matrix keeps A2 structure and the second phase appears surround the grain boundary as x C 0.1. h100 i preferred orientation is also observed for x = 0.1 sample along the axis of the quenched rod. The saturation magnetostriction first increases and maximum value reaches at x = 0.1, and then decreases with Tb addition increasing. The initial increase of the magnetostriction should be associated with the partial solution of Tb in the matrix, the maximum value at x = 0.1 should be attributed to the h100 i preferred orientation, and the decrease of the magnetostriction is correlated with the appearance of the second phase along the grain boundary.

关键词： Fe-Ga alloys Magnetostriction Microstructure melt quenching

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Transport and physical properties of V_(2)O_(5)-P_(2)O_(5)-B_(2)O_(3) glasses doped with Dy_(2)O_(3)

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Journal of Advanced Ceramics 2013年第3期2卷 246-251页

作者： R.V.BARDE S.A.WAGHULEY Department of Engineering Physics Shri Hanuman Vyayam Prasarak Mandal’s College of Engineering and TechnologyAmravati 444605India Department of Physics Sant Gadge Baba Amravati UniversityAmravati 444602India

We investigate the DC transport properties of 60V_(2)O_(5)-5P_(2)O_(5)-(35-x)B_(2)O_(3)-xDy_(2)O_(3)(x=0.4,0.6,0.8,1.0 and 1.2 mol%)glasses as function of temperature which were prepared using the conventional melt-quenching *** glasses are characterised by thermo gravimetric-differential thermal analysis(TG-DTA).Activation energy(E_(DC))is obtained from Arrhenius plots of temperature-dependent DC conductivity,and it is found to be 0.30 eV for high conducting *** order to understand the role of Dy_(2)O_(3) in these glasses,the density and molar volume are *** results show that molar volume of the glass increases with the increasing of Dy2O_(3) *** ionic conductivity is found to be dominant over the electronic conductivity and varies between 82%and 96%.

关键词： transport properties melt quenching Arrhenius plot glasses

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Novel Preparation and XPS Analysis of V_2O_5 Xerogel

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Journal of Wuhan University of Technology(Materials Science) 2003年第3期18卷 27-29页

作者：朱泉 School of Materials Science and Engineering Wuhan University of Technology

The V 2O 5 sol was fabricated by ultra fast *** vanadium with low valence (V 4+ ) was found in V 2O 5 xerogel films by XPS *** technology of oxygen top blown was applied to analyze the XPS spectrum difference of V 2O 5 xerogel when the powder of V 2O 5 was melting in air or in oxygen *** results show that the different melting atmosphere has certain influences on the chemical valence of V 2O 5 xerogel.

关键词： V 2O 5 xerogel films melt quenching oxygen top blown XPS

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