The results of linear and non-linear magnetic AC susceptibility measurements are reported for polycrystalline LaMn0.5Ga0.5O3. The observation of an asymmetric peak in the linear AC response at 59 K, accompanied by the development of a sizeable second-harmonic component and of a double-peak third-harmonic signal, suggests the establishment of a long-range ordered magnetic ground state with unconventional dynamics. The results are compatible with a picture assuming a canted antiferromagnetic structure or the presence of ferromagnetic domains embedded in an antiferromagnetic matrix.
Dynamic magnetic response of LaMn0.5Ga0.5O3 / Rinaldi, Daniele; Caciuffo, ROBERTO GIOVANNI MARIA; J. J., Neumeier; D., Fiorani; S. B., Oseroff. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - STAMPA. - 272–276:(2004), pp. 571-573. [10.1016/j.jmmm.2004.01.004]
Dynamic magnetic response of LaMn0.5Ga0.5O3
RINALDI, DANIELE;CACIUFFO, ROBERTO GIOVANNI MARIA;
2004-01-01
Abstract
The results of linear and non-linear magnetic AC susceptibility measurements are reported for polycrystalline LaMn0.5Ga0.5O3. The observation of an asymmetric peak in the linear AC response at 59 K, accompanied by the development of a sizeable second-harmonic component and of a double-peak third-harmonic signal, suggests the establishment of a long-range ordered magnetic ground state with unconventional dynamics. The results are compatible with a picture assuming a canted antiferromagnetic structure or the presence of ferromagnetic domains embedded in an antiferromagnetic matrix.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
