267 citations · 392 across the 12 of their papers we have counts for
4 papers · 1 filter
High Temperature Far Infrared Dynamics of Orthorhombic NdMnO3: Emissivity and Reflectivity
Néstor E. Massa, Leire del Campo, Domingos De Sousa Meneses +3
We report on near normal far- and mid-infrared emission and reflectivity of NdMnO3 perovskite from room temperature to sample decomposition above 1800 K. At 300 K the number infrar…
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…
First order transition and phase separation in pyrochlores with colossal-magnetoresistance
P. Velasco, J. Mira, F. Guinea +4
TlMnO pyrochlores present colossal magnetoresistance (CMR) around the long range ferromagnetic ordering temperature (T). The character of this magnetic phas…