Local studies of the ferromagnetic ordering temperature suppression in SrRuO3
Z. H. Han, J. I. Budnick, M. Daniel, W. A. Hines, D. M. Pease, P. W. Klamut, B. Dabrowski, S. M. Mini, M. Maxwell, C. W. Kimball
Abstract
In order to gain insight into suppression of the ferromagnetic ordering temperature, local studies utilizing 99,101Ru zero-field spin-echo NMR, along with complimentary magnetization, high-angle x-ray diffraction, and Ru K-edge XAFS measurements, have been carried out on samples of SrRuO3 annealed at both "ambient" (atmospheric) pressure and "high-pressure" oxygen (600 atm). For the "high pressure" sample, the results indicate structural disorder and the existence of some vacancies on the Ru sites, along with a reduced magnetic ordering temperature.
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