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cond-mat.mtrl-sci2003
Dielectric response of the charge-ordered two-dimensional nickelate La1.5Sr0.5NiO4
J. Rivas, B. Rivas-Murias, A. Fondado +2
We are reporting the dielectric response of La1.5Sr0.5NiO4, a system that presents a charge-ordered state above room temperature and a rearrangement of its charge-order pattern in…
cond-mat.str-el2003
Field-induced magnetic anisotropy in La0.7Sr0.3CoO3
J. Mira, J. Rivas, M. Vazquez +3
Magnetic anisotropy has been measured for the ferromagnetic La0.7Sr0.3CoO3 perovskite from an analysis of the high-field part of the magnetization vs. field curves, i.e., the magne…
cond-mat.str-el2003
Ultrasonic evidence of an uncorrelated cluster formation temperature in manganites with first-order magnetic transition at T_C
J. Mira, J. Rivas, A. Moreno-Gobbi +2
Ultrasonic attenuation and phase velocity measurements have been carried out in the ferromagnetic perovskites La_{2/3}Ca_{1/3}MnO_3 and La_{2/3}Sr_{1/3}MnO_3. Data show that the tr…