title: Interference of coexisting para- and ferromagnetic phases in partially crystallized films of doped manganites.
abstract: Electron spin resonance spectra have been studied in partially crystallized films of La(1-x)Na(x)MnO(3) (x = 0.16) in the vicinity of the para- to ferromagnetic transition. The objects of investigation were obtained by magnetron sputtering on polycrystalline Al(2)O(3) substrates held at different temperatures. It is shown that, in a regime where the paramagnetic and ferromagnetic phases coexist, the resonance conditions for one phase strongly depend on the parameters of the other phase. As a result, the resonance field of the paramagnetic phase becomes dependent on the shape of the sample, the saturation magnetization and the fraction of the ferromagnetic phase. A simple model is developed to predict the character of the changes in the resonance field of the paramagnetic phase upon the nucleation of the ferromagnetic phase.
authors.affiliation: Institute of Magnetism, 36-b Vernadsky Boulevard, Kyiv 03142, Ukraine.
authors.forename: A I
authors.initials: AI
authors.lastname: Tovstolytkin
authors.forename: A M
authors.initials: AM
authors.lastname: Pogorily
authors.forename: Yu I
authors.initials: YI
authors.lastname: Dzhezherya
authors.forename: V V
authors.initials: VV
authors.lastname: Dzyublyuk
authors.forename: D J
authors.initials: DJ
authors.lastname: Mapps