INVESTIGADORES
ALONSO Roberto Emilio
congresos y reuniones científicas
Título:
-Laser heated pedestal growth method tested by PAC technique for the presence of Oxygen vacancies in SrHfO3 fiber
Autor/es:
P. DE LA PRESA; R. E. ALONSO; A. LÓPEZ GARCÍA; S. CUFFINI; J. GUEVARA; M. ANDREETA
Lugar:
Montreaux, Suiza
Reunión:
Congreso; Europian Conference on Applications of Polar Dielectrics; 1998
Resumen:
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The rapid deployment of the optical fiber as transmission medium has
created an interest in fiber [G1] compatible optical devices and method for growing them, as LASER HEAT
PEDESTAL GROWTH (LHPG). By the other hand, PERTURBED ANGULAR CORRELATION (PAC)
spectroscopy has demonstrated to be one of the most powerful technique to detect
oxygen vacancies, defects or impurities at very low concentracion,
concentrations that other tecniques cannot detect.
In this work we measured by PAC spectroscpy the SrHfO3 fiber
growing by LHPG method. The hiperfine parameters indicate that the compound is
stoichiometric. Moreover, after annealing at 1300 K no oxygen vacancies were
originated. These results are compared with those where the sample was prepared
by solid state reaction.
[G1]
