Single-phase nanocrystalline NiCo2O4 exhibits large exchange bias (~375 Oe) and butterfly-shaped negative magnetoresistance (~31.5%) that both originate from antiphase boundaries confirmed by HRTEM.
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Antiphase boundary-driven large exchange bias and negative magnetoresistance in NiCo2O4
Single-phase nanocrystalline NiCo2O4 exhibits large exchange bias (~375 Oe) and butterfly-shaped negative magnetoresistance (~31.5%) that both originate from antiphase boundaries confirmed by HRTEM.