A ferromagnetic resonance study of La1−xCaxMnO3

Magnetic and electronic properties of the magnetoresistive perovskites La0.67−xBixCa0.33MnO3

“…This difference, though small, persists even above ¹ . This has also been discussed earlier on the basis of FMR and magnetization studies [14,16,21]. The value of Curie constant was found to be enhanced by a factor of 2 from the spin only value for temperatures just above ¹ and the tail in the M versus ¹ plot persists beyond ¹ [16].…”

Perovskite catalysts for the catalytic flameless combustion of methane

“…give EPR spectra with smaller line-width values than 3500 nm particles of the same composition [24]. The size-dependent relaxation process leads to slower electronic relaxation rates for nano-structured paramagnetic particles and, therefore, to narrower EPR lines [25].…”

Size effect on the electron-spin resonance ofPr0.7Sr0.3−xCaGundakaram1, Lin2, Huang3 1998Phys. Rev. B231120View full textAdd to dashboardCite

“…10 Since the discovery of CMR in oxides, ferromagnetic resonance studies on related materials have been reported by several others. [11][12][13][14] Of particular interest to the present work, Oseroff et al 15 have reported that the origin of the resonance line in La 1Ϫx Ca x MnO 3ϩ␦ is not due to isolated Mn ions, but due to a spin complex which is some form of short-range ordering among the spin-polarized clusters. Shengelaya et al 16 have provided microscopic evidence for the formation of Jahn-Teller polarons in La 1Ϫx Ca x MnO 3ϩy from EPR studies.…”