A centrality measure based on the time of first returns rather than the number of steps is developed and applied to finding proton traps and access points to proton highways in the doped perovskite oxides: AZr(0.875)D(0.125)O3, where A is Ba or Sr and the dopant D is Y or Al. The high centrality region near the dopant is wider in the SrZrO3 systems than the BaZrO3 systems. In the aluminum-doped...

The Nernst effect in metals is highly sensitive to two kinds of phase transition: superconductivity and density-wave order. The large, positive Nernst signal observed in hole-doped high-T(c) superconductors above their transition temperature (T(c)) has so far been attributed to fluctuating superconductivity. Here we report that in some of these materials the large Nernst signal is in fact the r...

The LAO-GDC solid composite electrolyte has been proposed for use in Solid Oxide Fuel Cells (SOFC). material conductivity of Carbonate-Ceria (SCC) electrolytes is 0.04Scm-1 between 400 and 700°C. For this purpose, mixtures LaAlO3 (LAO) gadolinium doped ceria Ce0.8Gd0.2O2 (GDC) were created weight ratios 3:1, 2:2, 1:3. was studied separately to improve conductivity. phase structure microstructur...

We examine the low–temperature magnetic properties of moderately doped La2−xSrxCuO4, paying particular attention to the spin–glass phase and the commensurate–incommensurate transition as they are affected by Sr impurity disorder. A model of the carriers, believed to be appropriate at low temperatures, is employed in the CuO2 planes that accounts for both the strong coupling of the hole’s motion...

To gain insights into the fundamental and characteristic features of the surface of doped manganites, we constructed a general magnetic phase diagram of La1−xSrxMnO3 (001) surfaces in the plane spanned by x and the bulk tetragonal distortion c/a, from the first-principles calculations. We found that the surfaces are quite different from the bulk in the sense that both the (La, Sr)O and MnO2 ter...

Abstract The scintillation properties of Hf-based oxide materials are reviewed briefly. In particular, we focused on the undoped, Ti-doped, and rare-earth-doped HfO 2 , M 3 ( = Ca, Sr, Ba), RE Hf O 7 La, Gd, Lu). explained here spectra, decay, light yield estimated by measurement pulse height distribution. Further, synthesis methods material single crystals transparent ceramics included in this...

Maintaining sufficient mechanical support during bone healing is an essential property for ceramic scaffolds. However, grain boundary (GB) dissolution may compromise the strength of polycrystalline ceramics in physiological environment. Therefore, we investigated GB formation and its impact on compressive corrosion behavior TiO2 scaffolds doped with calcium strontium. To alter composition densi...

The observation of superconductivity in infinite layer nickelate (Nd,Sr)NiO$_{2}$ thin films has led to rapid theoretical and experimental investigations these copper-oxide-analogue systems [1-15]. Superconductivity also been found (Pr,Sr)NiO$_{2}$ [16,17], but not previously (La,Sr)NiO$_{2}$ [2], raising a fundamental question whether is associated with the presence rare-earth moments [18,19]....

The recent observation of superconductivity in infinite-layer Nd$_{1-x}$Sr$_x$NiO$_2$ thin films has attracted a lot attention, since this compound is electronically and structurally analogous to the superconducting cuprates. Due challenges phase stabilization upon chemical doping with Sr, we synthesized artificial superlattices LaNiO$_3$ embedded insulating LaGaO$_3$, used layer-selective topo...

PURPOSE Biphasic calcium phosphate (BCP) ceramics are suitable for synthetic bone applications. The strontium substituted calcium phosphate ceramics have potential for use in orthopedic surgeries. Aim of the present work is to introduce strontium into BCP (composed of hydroxyapatite and tricalcium phosphate) ceramics and to study their bioactivity and mechanical properties. METHODS BCP cerami...