Bismuth oxide kinetically stabilized by doping with a metastable structure of disordered fluorite ?-Bi2O3 has unique conductivity. Oxygen selective membranes at intermediate temperatures ~550?C, on the base cermet ?-Bi2O3/Ag, have highest potential for air separation and can be used to produce oxygen distributed multigeneration burning fossil carbon fuels. When searching optimal composition ?-B...

A detailed investigation has been conducted on the dielectric anomalies induced by different electrical and thermal conditions in @111# oriented 0.955Pb(Zn1/3Nb2/3)O320.045PbTiO3 ~PZN-4.5%PT! single crystals. Application of a dc electrical field to the crystal results in field induced dielectric anomalies to occur at specific temperatures, which can be explained by the structural phase transiti...

Modulated phases occur in numerous functional materials like giant ferroelectrics and magnetic shape-memory alloys. To understand the origin of these phases, we employ and generalize the concept of adaptive martensite. As a starting point, we investigate the coexistence of austenite, adaptive 14M phase, and tetragonal martensite in Ni-Mn-Ga magnetic shape-memory alloy epitaxial films. We show t...

A commercially available Y-TZP ceramic powder was fabricated under four different sintering profiles in order to investigate the effects of conventional single-stage sintering (SSS) with dwell times of 1 min and 2 h, respectively, compared with two-stage sintering (TSS), on the physical and mechanical properties of Y-TZP. Sintering was performed up to 1400 o C at a ramp rate of 10 o C/min. It w...

Magnetic domain configurations in the ferromagnetic shape memory alloy Ni2MnGa are analyzed by means of Lorentz microscopy and noninterferometric phase reconstruction methods. Domain structures in the cubic phase consist of cross-tie walls in the thinnest portions of the foil, and more complex configurations in thicker regions. At low temperature, the magnetization configurations change as the ...

Yu Li,1 Weiyi Wang,1 Yu Song,1 Haoran Man,1 Xingye Lu,2 Frédéric Bourdarot,3 and Pengcheng Dai1,2,* 1Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA 2Center for Advanced Quantum Studies and Department of Physics, Beijing Normal University, Beijing 100875, China 3Univ. Grenoble Alpes. CEA, DRF, INAC, MEM/MDN, F-38000 Grenoble, France (Received 16 May 2017; publish...

Tetragonal Zirconia Polycrystals stabilized with 3% mol. content of yttria (3Y-TZP) has excellent properties in terms of strength and fracture toughness. These properties are mostly imputable to the transformation toughening mechanism, by which the doped metastable tetragonal phase of zirconia transforms to monoclinic under applied stress ahead of a crack. This phenomenon is accompanied by a vo...

The identification of orientation relationships (ORs) plays a crucial role in the understanding of solid phase transformations. In steels, the most common models of ORs are the ones by Nishiyama-Wassermann (NW) and Kurdjumov-Sachs (KS). The defining feature of these and other OR models is the matching of directions and planes in the parent face-centred cubic γ phase to ones in the product body-...