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arXiv · 2009.09199

Novel magnetic and ferroelectric behaviors observed in alpha Fe2O3 particles

Zhi Ma·Long Zhou·Xu Long Zhang·Hong Fei Liu·Huan Ming Chen·Fu Zheng·Hua Gao
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Abstract

Alpha Fe2O3 powders have been prepared by the reduction reaction method with NaHB4 as reducing agent and followed a conventional sintering process. The XRD pattern with Rietveld refinement profile reveal that the prepared Fe2O3 with corundum structure (hematite). VSM loop exhibits obvious room-temperature weak ferromagnetism, a pinched hysteresis loop may introduced by the shape anisotropy effect. The simultaneous ferroelectric behavior of {\alpha}-Fe2O3 with "five-fold" ferroelectric hysteresis loops approves that this structured Fe2O3 can be known as a novel multiferroic material.

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Zhi Ma, Long Zhou, Xu Long Zhang, Hong Fei Liu, Huan Ming Chen, Fu Zheng, Hua Gao. 2020-09-19. Novel magnetic and ferroelectric behaviors observed in alpha Fe2O3 particles. https://arxiv.org/abs/2009.09199

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