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Quenching of ferrimagneticlike ordering in SrCr8Fe4O19 hexagonal ferrite

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We report here measurements of high field (H≤150 kOe) isothermal magnetization, dc and ac susceptibility, and Mossbauer spectroscopy of the exchange frustrated insulator SrCr8Fe4O19. The isothermal magnetization and Mossbauer spectroscopy results are consistent with a ferrimagneticlike transition at TC≊250 K. Low field dc and ac susceptibility measurements reveal a reentrant spin‐glass transition at low temperature but they fail to show any anomaly at the nominal Curie temperature TC. This unusual feature is interpreted as indicative of a transition where long range ferrimagnetic ordering has been replaced by a correlated spin‐glass phase with finite spin correlation length.

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Reproducció digital del document proporcionada per AIP i http://dx.doi.org/10.1063/1.340559

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Articles publicats en revistes (Física de la Matèria Condensada)

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Quenching of ferrimagneticlike ordering in SrCr8Fe4O19 hexagonal ferrite