نتایج جستجو برای: doped lanthanum manganite
تعداد نتایج: 51809 فیلتر نتایج به سال:
One-dimensional nanostructures, including nanowires, nanorods, nanotubes, nanofibers, and nanobelts, have promising applications in mesoscopic physics and nanoscale devices. In contrast to other nanostructures, one-dimensional nanostructures can provide unique advantages in investigating the size and dimensionality dependence of the materials' physical properties, such as electrical, thermal, a...
Abstract The structural and optical properties of lanthanum oxide doped nanocrystalline vanadium pentoxide films with the chemical composition xLa 2 O 3 -(1-x)V 5 .nH (where x = 0.25, 0.50 1.0 mol%) prepared by sol–gel method were studied. XRD analysis also revealed that (002) line is noticeable in pure film gets sharper addition Lanthanum, which indicates a layer intercalation between layers. ...
tm3+, yb3+ and tm3+/yb3+ doped lavo4 nanostructures were synthe-sized for the first time by using the hydrothermal method with the aid of la(ch3co2)3 as lanthanum source in presence of oleic acid as surfactant. the products were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem), transmission electron microscopy (tem), photoluminescence (pl) spectroscopy and uv–vis di...
Not only is zigzag charge and orbital ~CO! order shown to be present in the highly doped (x50.61) bilayered manganite system La222xSr112xMn2O7 , it demonstrates an enhanced stability relative to the x 50.5 composition where the ordered state might be expected to have the lowest entropy. No magnetic-field dependence is observed up to 5.25 T. The CO ordering temperature also increases from 210 K ...
Inhomogeneous phase separation and domain wall dynamics in the orthorhombically distorted La 0.87 MnO x Abstract. We observe the interesting magnetization and resistivity results in the orthorhombically distorted self doped manganite, La 0.87 MnO x. A significant irreversibility between zero-field-cooled and field-cooled resistivities as well as magnetization data is clearly observed up to a te...
We demonstrate the stability of ferromagnetic order one unit cell thick optimally doped manganite (La0.7Ba0.3MnO3, LBMO) epitaxially grown between two layers SrRuO3 (SRO) by using x-ray magnetic circular dichroism. At low temperature, LBMO shows an inverted hysteresis loop due to strong antiferromagnetic coupling SRO. Moreover, above SRO TC, still exhibits remanence. Density Functional Theory c...
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