Near Room-Temperature Magnetic Ordering in Doped Multiferroic Hexagonal YbFeO3

POSTER

Abstract

Hexagonal rare-earth ferrite RFeO3 family is a unique multiferroic material holding weak ferromagnetic moment, which is predicted to be coupled with trimerization. Until now, only the low temperature magnetic transitions at 120~170 K have been verified. We stabilize this structure in YbFeO3 with finely tuned Sc substitution level, and demonstrate a new near room-temperature magnetic ordering at Tc ~ 225 K in Yb0.42Sc0.58FeO3, accompanying the ferroelectric transition. The weak ferromagnetism is also unambiguously evidenced below Tc, which is originated from the magnetoelectric spin-lattice coupling. More importantly, three successive magnetic transitions at TR1 ~ 165 K, TR2 ~ 33 K and T* ~ 8.5 K have been observed, which may indicate complex interaction between the rare-earth and Fe ions magnetic moments. The present work pushes forward the progress to hunt for room-temperature multiferroics in hexagonal ferrites and related materials.

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Presenters

  • Lin Lin

    Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing University, Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China

Authors

  • Lin Lin

    Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing University, Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China

  • Shumin Wang

    Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University

  • Shuhan Zheng

    Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University

  • Kunlun Yang

    Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University

  • Shuai Dong

    School of physics, Southeast University, Southeast University, School of Physics, Southeast University

  • Yongqiang Li

    Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China

  • Zhi-Bo Yan

    Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University

  • Junming Liu

    Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing University, Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China