267 citations · 328 across the 4 of their papers we have counts for
4 papers
Short-range charge-order in NiO perovskites (=Pr,Nd,Eu) probed by X-ray absorption spectroscopy
Cínthia Piamonteze, Hélio C. N. Tolentino, Aline Y. Ramos +4
The short-range organization around Ni atoms in orthorhombic NiO (=Pr,Nd,Eu) perovskites has been studied over a wide temperature range by Ni K-edge x-ray absorption sp…
Phonon Activity and a Possible Lattice Arrangement in the Intermediate Phase of YVO3
Nestor E. Massa, Cinthia Piamonteze, Helio C. N. Tolentino +3
We show that in YVO3 new hard phonons gradually become zone center active below ~210 K verifying that a lattice phase transition takes place at about that temperature. The Debye-Wa…
Small Polaron Localization, Jahn-Teller Distortion and Defects in La0.67Ca0.33MnO3: An Infrared Spectroscopy and X-ray Absorption Analysis
Nestor E. Massa, Helio C. N. Tolentino, Horacio Salva +3
We combine infrared reflectivity and EXAFS (Extended X-ray Absorption Fine Structure) techniques to study the solid solution La0.67Ca0.33MnO3 prepared by different methods yielding…
Raman phonons as a probe of disorder, fluctuations and local structure in doped and undoped orthorhombic and rhombohedral manganites
L. Martin-Carron, A. de Andres, M. J. Martinez-Lope +2
We present a rationalization of the Raman spectra of orthorhombic and rhombohedral, stoichiometric and doped, manganese perovskites. In particular we study RMnO3 (R= La, Pr, Nd, Tb…