Person
George Cristian Vaju
This person is no longer with EPFL
Related publications (5)
Pressure dependence of the large-polaron transport in anatase TiO2 single crystals
László Forró, Arnaud Magrez, Richard Gaal, Helmuth Berger, Jacim Jacimovic, George Cristian Vaju, Radomir Zikic
We have measured the pressure and temperature dependences of the resistivity and the thermoelectric power of anatase, TiO2. The resistivity varies with T-3 at high temperatures, and its absolute value is in the 1 Omega cm range. Below 60 K, the resistivity ...
Epl Association, European Physical Society2012Defects and localization in chemically-derived graphene
László Forró, Arnaud Magrez, Andrzej Sienkiewicz, Richard Gaal, Luka Ciric, Jacim Jacimovic, George Cristian Vaju
We have performed electron spin resonance (ESR) measurements on a large assembly of graphene oxide (GO) and reduced graphene oxide (RGO) flakes. In GO samples the Curie tail is coming from 1.4 x 10(18) cm(-3) of localized spins. Although reduction of GO wa ...
Amer Physical Soc2012Synthesis, electrical resistivity, thermo-electric power and magnetization of cubic ZnMnO3
László Forró, Arnaud Magrez, Andrzej Sienkiewicz, Richard Gaal, Rita Smajda, Jacim Jacimovic, Zlatko Mickovic, George Cristian Vaju
Cubic ZnMnO3 powder in the form of well-crystalline nanoflakes have been synthesized at low temperatures from a nitrate precursor. The electrical properties of cubic ZuMnO(3) samples have been established by DC resistivity (rho) and thermo-electric power ( ...
Elsevier2011Evidence from thermodynamic measurements for a singlet crystal-field ground state in pyrochlore Tb2Sn2O7 and Tb2Ti2O7
The magnetic entropy variation for the ordered spin-ice Tb2Sn2O7 and the spin-liquid Tb2Ti2O7 measured up to similar to 20 K shows that the crystal-field ground state for both systems is a singlet split from the first excited level by a thermal energy of s ...
2010High-pressure study of anatase TiO2
László Forró, Arnaud Magrez, Richard Gaal, Helmuth Berger, Jacim Jacimovic, George Cristian Vaju
We report resistivity and thermo-electric power measurements of the anatase phase of TiO2 under pressure up to 2.3 GPa. Despite its transparent appearance, the single crystal of anatase exhibits a metallic-like resistivity above 60 K, at all pressures. The ...
2010