%0 Journal Article %A S.M Bhagat %A S.E Lofland %A P.H Kim %A D.C Schmadel %A C Kwon %A Ramamoorthy Ramesh %A S.D Tyagi %B Journal of Applied Physics %D 1997 %G eng %P 5157-5158 %T Ferromagnetic antiresonance in La0.7Ba0.3MnO3 traced out by temperature variation %V 81 %X Using the phenomenon of ferromagnetic antiresonance (FMAR) in ceramic samples of La0.67Ba0.33MnO3 at 10 GHz, we report a large magneto-impedance MI=Rs(Hl) -Rs(H⊥)/Rs(Hl), where Rs is the microwave surface resistance and H the applied field. The MI reaches 30% at a field of 30 mT near room temperature. The FMAR also lets us measure M(T) by following Rs as a function of T and H. © 1997 American Institute of Physics.