Griffiths-like phase and charge-spin glass state in La1. 5Sr0. 5CoO4
Hole-doped antiferromagnetic La 2 CoO 4 has been known to possess intriguing electronic
and magnetic phases due to the complex temperature and magnetic field dependent
behavior of Co 3+ ions. Here, we report on magnetic and dielectric observations in the half
hole-doped La 1.5 Sr 0.5 CoO 4. A Griffiths-like phase has been observed in the high
temperature region below TG (∼ 244 K). At low temperature (∼ 55 K), a metamagnetic
phase has been observed where antiferromagnetic correlations appear. On further cooling …
and magnetic phases due to the complex temperature and magnetic field dependent
behavior of Co 3+ ions. Here, we report on magnetic and dielectric observations in the half
hole-doped La 1.5 Sr 0.5 CoO 4. A Griffiths-like phase has been observed in the high
temperature region below TG (∼ 244 K). At low temperature (∼ 55 K), a metamagnetic
phase has been observed where antiferromagnetic correlations appear. On further cooling …
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