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Observation of Ferromagnetism in Dilute Magnetic Halide Perovskite Semiconductors

  • Zhongwei Chen
  • , Chunmei Wang
  • , Jie Xue
  • , Jian Chen
  • , Lingling Mao
  • , Haoliang Liu*
  • , Haipeng Lu*
  • *Corresponding author for this work
  • Hong Kong University of Science and Technology
  • Harbin Institute of Technology
  • Southern University of Science and Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Dilute magnetic semiconductors (DMSs) have attracted much attention because of their potential use in spintronic devices. Here, we demonstrate the observation of robust ferromagnetism in a solution-processable halide perovskite semiconductor with dilute magnetic ions. By codoping of magnetic (Fe2+) and aliovalent (Bi3+) metal ions into CH3NH3PbCl3 (MAPbCl3) perovskite, ferromagnetism with well-saturated magnetic hysteresis loops and a maximum coercivity field of 1280 Oe was observed below 12 K. The ferromagnetic resonance measurements revealed that the incorporation of aliovalent ions modulates the carrier concentration and plays an essential role in realizing the ferromagnetism in dilute magnetic halide perovskites. Magnetic ions are proposed to interact through itinerant charge carriers to achieve ferromagnetic coupling. Our work provides a new avenue for the development of solution-processable magnetic semiconductors.

Original languageEnglish
Pages (from-to)3125-3132
Number of pages8
JournalNano Letters
Volume24
Issue number10
DOIs
StatePublished - 13 Mar 2024
Externally publishedYes

Keywords

  • dilute magnetic semiconductor
  • ferromagnetism
  • halide perovskite
  • magnetic polaron

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