3mno3 Magnetoimpedancia
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1. Estudo da MagnetoimpedÃncia em La0;7Ca0;3MnO3 e La0;6Y0;1Ca0;3MnO3
In the present work, we report high frequency lock-in detection tecniques. The techniques were used to investigate La0:7Ca0:3MnO3 and La0:6Y0:1Ca0:3MnO3 manganites. The measurements were carried out at temperatures ranging from 50 to 300 K, and for applied magnetic fields up to 6 T, using both dc and ac currents. The frequency f of the ac current was varried
Publicado em: 2003