http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Dash, U.,Raveendra, N.V.,Jung, C.U. Elsevier Sequoia 2016 JOURNAL OF ALLOYS AND COMPOUNDS Vol.684 No.-
Bulk BiMnO<SUB>3</SUB> has a monoclinic structure and exhibits ferromagnetic properties below Tc~105 K. The existence of ferroelectricity was one of the hottest issues in this compound. To investigate the ferroelectricity in BiMnO<SUB>3</SUB>, a good film with low-enough leakage is highly required. However the reported quality of BiMnO<SUB>3</SUB> thin films has shown critical dependence on stoichiometry. Previously, we reported that a BiMnO<SUB>3</SUB> thin film grown on top of a SrTiO<SUB>3</SUB> (001) substrate has good stoichiometry, as well as bulk-quality ferromagnetic properties, but our results did not demonstrate the Q-E hysteresis curves. However, we could not exclude the possibility that non-ferroelectricity observed in the BiMnO<SUB>3</SUB> film is partly due to the tetragonal symmetry enforced by the strong epitaxial strain of the substrate since the ferroicity in most oxides accompanies with or equivalently originates from crystal symmetry breaking and/or lowering. In the present work, we used a SrTiO<SUB>3</SUB> (110) substrate with an anisotropic in-plane atomic arrangement to stabilize the BiMnO<SUB>3</SUB> thin film having the symmetry lower than tetragonal symmetry. After observing the stabilization of twined monoclinic phase in the BiMnO<SUB>3</SUB> film, we solved the twin problem by trying a novel substrate; i.e., miscut SrTiO<SUB>3</SUB> (110) substrate. The physical properties for the stoichiometric, twin-free, monoclinic BiMnO<SUB>3</SUB> thin film were notably similar to those reported for the stoichiometric BiMnO<SUB>3</SUB> bulk with monoclinic symmetry. We believe this new data more rigorously demonstrates the absence of ferroelectricity in stoichiometric monoclinic BiMnO<SUB>3</SUB>.
Mohapatra, R.K.,Mishra, U.K.,Mishra, S.K.,Mahapatra, A.,Dash, D.C. Korean Chemical Society 2011 대한화학회지 Vol.55 No.6
A series of complexes of the type [$ML_2Cl_2$], where L=2-(o-anisylidene-2'-imino) amino benzimidazole (AIAB) and 2-(furfurylidene imino) amino benzimidazole (FIAB), M=Cu(II), Co(II), Ni(II) and Zn(II), have been synthesized and characterized on the basis of elemental analysis, thermal analysis, molar conductivity, magnetic moment, electronic, infrared, $^1H$-NMR spectral studies. The results are in consistent with bidentate chelation of ligand with azomethine nitrogen and ring nitrogen donors. All these Schiff bases and their complexes have also been screened for their antibacterial (Bacillus subtilis, Bacillus stearothermophilus, Escherichia coli and Salmonella typhi) and antifungal activities (Aspergillus niger and Aspergillus flavus).
Toreh, K.R.N.,Kim, D.H.,Dash, U.,Phan, T.L.,Lee, B.W.,Jin, H.W.,Lee, S.,Park, B.H.,Park, J.Y.,Cho, M.R.,Park, Y.D.,Acharya, S.K.,Yoo, W.,Jung, M.H.,Jung, C.U. Elsevier Sequoia 2016 Journal of alloys and compounds Vol.657 No.-
SrRu<SUB>1-x</SUB>Fe<SUB>x</SUB>O<SUB>3-δ</SUB> (x = 0.00, 0.05, 0.10, and 0.20) thin films were fabricated to study the intrinsic aspects of a ''self spin valve''. Using epitaxial strain and high oxygen partial pressure during thin film growth, single phase thin films with negligible oxygen vacancies were successfully grown, and problems related to A-site disorder and grain boundaries were minimized. Under application of an external magnetic field of up to 9 T, the resistivity of all films decreased, resulting in large negative magnetoresistance (up to ~14.4%), which was stronger at temperatures in the range 10-30 K. An abrupt metal-insulator transition at T~ 43 K was found in the x = 0.20 film, which was explained using a two-fluid model related to electron-electron interactions. From the model, two fitting parameters were found to be necessary for in-situ and homogenous defects, while three or unphysical fitting parameters were necessary for ex-situ and inhomogeneous defects.