4 years ago

Realization of Large Electric Polarization and Strong Magnetoelectric Coupling in BiMn3Cr4O12

Realization of Large Electric Polarization and Strong Magnetoelectric Coupling in BiMn3Cr4O12
Masaki Azuma, Yisheng Chai, Youwen Long, Yunyu Yin, Zhehong Liu, Young Sun, Hajime Hojo, Zhiwei Hu, Huibo Cao, Shuai Dong, Jianhong Dai, Yuichi Ikuhara, Xiao Wang, Changqing Jin, Stuart Calder, Huimin Zhang, Yuichi Shimakawa, Takashi Saito, Long Zhou, Xudong Shen
Magnetoelectric multiferroics have received much attention in the past decade due to their interesting physics and promising multifunctional performance. For practical applications, simultaneous large ferroelectric polarization and strong magnetoelectric coupling are preferred. However, these two properties have not been found to be compatible in the single-phase multiferroic materials discovered as yet. Here, it is shown that superior multiferroic properties exist in the A-site ordered perovskite BiMn3Cr4O12 synthesized under high-pressure and high-temperature conditions. The compound experiences a ferroelectric phase transition ascribed to the 6s2 lone-pair effects of Bi3+ at around 135 K, and a long-range antiferromagnetic order related to the Cr3+ spins around 125 K, leading to the presence of a type-I multiferroic phase with huge electric polarization. On further cooling to 48 K, a type-II multiferroic phase induced by the special spin structure composed of both Mn- and Cr-sublattices emerges, accompanied by considerable magnetoelectric coupling. BiMn3Cr4O12 thus provides a rare example of joint multiferroicity, where two different types of multiferroic phases develop subsequently so that both large polarization and significant magnetoelectric effect are achieved in a single-phase multiferroic material. The A-sited ordered perovskite BiMn3Cr4O12 presents a rare example of single-phase multiferroic systems where both type-I and type-II multiferroic phases coexist. In sharp contrast to previous findings, large electric polarization and strong magnetoelectric effect are compatible in the current BiMn3Cr4O12, providing a new pathway for generating advanced multiferroic materials and devices.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/adma.201703435

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.