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Full-Text Articles in Physical Sciences and Mathematics
Fabrication And Superconducting Properties Of Highly Dense Mgb2 Bulk Using A Two-Step Sintering Method, Minoru Maeda, Yue Zhao, Yoshifumi Watanabe, Hiroaki Matsuoka, Y Kubota
Fabrication And Superconducting Properties Of Highly Dense Mgb2 Bulk Using A Two-Step Sintering Method, Minoru Maeda, Yue Zhao, Yoshifumi Watanabe, Hiroaki Matsuoka, Y Kubota
Australian Institute for Innovative Materials - Papers
We investigated on microstructure and superconducting properties of high-density MgB2superconductors synthesized by a heat-treatment method combining a short period of sintering at 1100°C with a following annealing at a low temperature. The two-step sintering method was found to achieve a coexistence of a high density and broadened XRD full width at half maximum (FWHM) of MgB2 peak in the samples. The onset of diamagnetism at 5 T was approximately 2 K higher than those of the samples heat-treated by single-step sintering at high or low temperatures. Different second-step annealing temperatures were examined in this work. …
Crystal Structure And Electronic And Thermal Properties Of Tbfeaso0.85, N Kaurav, Y.T Chung, Y.K Kuo, R S Liu, T S Chan, J.M Chen, J.F Lee, H.S Sheu, Xiaolin Wang, S X. Dou, Sung-Ik Lee, Y.G Shi, A.A Belik, K Yamaura, E Takayama-Muromachi
Crystal Structure And Electronic And Thermal Properties Of Tbfeaso0.85, N Kaurav, Y.T Chung, Y.K Kuo, R S Liu, T S Chan, J.M Chen, J.F Lee, H.S Sheu, Xiaolin Wang, S X. Dou, Sung-Ik Lee, Y.G Shi, A.A Belik, K Yamaura, E Takayama-Muromachi
Australian Institute for Innovative Materials - Papers
The crystal structure and the electronic and thermal properties of a high-quality polycrystalline TbFeAsO0.85 sample made by a high-pressure technique are investigated. The crystal structure, as determined by synchrotron X-ray powder diffraction, possesses a tetragonal unit cell (space group: P4/nmm) with lattice parameters of a=b=3.8851 Å and c =8.3630 Å. In order to elucidate the electronic structure and oxidation states of corresponding elements, X-ray absorption near-edge structure (XANES) spectra are presented. The XANES spectra confirm that the oxidation states of Fe, As, and Tb in the TbFeAsO0.85 sample are ~Fe2+, …
Room Temperature Multiferroic Properties Of Nd: Bifeo3/Bi2femno6 Bilayered Films, Hongyang Zhao, Hideo Kimura, Zhenxiang Cheng, Xiaolin Wang, Takashi Nishida
Room Temperature Multiferroic Properties Of Nd: Bifeo3/Bi2femno6 Bilayered Films, Hongyang Zhao, Hideo Kimura, Zhenxiang Cheng, Xiaolin Wang, Takashi Nishida
Australian Institute for Innovative Materials - Papers
Nd0.1Bi0.9FeO3 /Bi2FeMnO6 bilayered films were deposited on Pt/Ti/SiO2 / Si substrate by pulsed laser deposition method. BiFeO3 is antiferromagnet while BiMnO3 is ferromagnet, the ordering of –Mn–O–Fe–O–Mn– is expected, which will induce the ferromagnetic interation in the film. The film shows typical ferromagnetic properties with the transition temperature of Tc of 440 K. The room temperature (RT) ferroelectric polarization was also observed, suggesting that the film is a promising RT multiferroism.