A5044685433- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Multiferroics and related materials
- Rare-earth and actinide compounds
- Ferroelectric and Piezoelectric Materials
- Electronic and Structural Properties of Oxides
- Gas Sensing Nanomaterials and Sensors
- Dielectric properties of ceramics
- Transition Metal Oxide Nanomaterials
- ZnO doping and properties
- Copper-based nanomaterials and applications
Universidade Federal do ABC
2011-2017
Universidade de São Paulo
2017
CuO nanograins (NGs) and nanowires (NWs) on the top of samples were produced by electrical resistive heating method. The NGs sample shows absence long range magnetic order strong field-induced ferromagnetic behavior. In comprised NWs NGs, a long-ranged antiferromagnetic ordering is induced field 5 kOe coexists with an enhanced ferromagnetic-like contribution. behavior observed below above temperature-induced TN suggesting that this not dependent original state system, whether it paramagnetic...
Magnetic, structural, and electric transport measurements at high temperatures were carried out on La1−xCaxMnO3; x=0.20, 0.25, 0.30, 0.34, 0.40, 0.45. All samples show a first-order structural phase transition from orthorhombic Pnma to rhombohedral R3¯c space group TR–O. Magnetic susceptibility that the Curie–Weiss law is strictly obeyed in as opposed where effective magnetic moment has temperature dependence. The electrical resistivity well described by small polaron hopping mechanism up...
Abstract Measurements of X-ray diffraction, electrical resistivity, and magnetization are reported across the Jahn–Teller phase transition in LaMnO3. Using a thermodynamic equation, we obtained pressure derivative critical temperature (T JT ), dT /dP = −28.3 K GPa−1. This approach also reveals that 5.7(3)J (mol K)−1 comes from volume change 0.8(2) J magnetic exchange interaction transition. Around T , robust increase conductivity takes place electronic entropy change, which is assumed to be...