Effect of incorporation of magnetization in antiferromagnetic Cr2O3 by mechanically alloying with α-Fe nanoparticles

Nihar R. Panda, Satya P. Pati, Dojalisa Sahu, Dipankar Das

Research output: Contribution to journalArticlepeer-review

Abstract

Recently, study on magnetoelectric (ME) materials have attracted much attention due to their applicability in low power dissipation electronic devices. Most of the single-phase ME materials are antiferromagnet (AFM) having zero net magnetic moment and hence difficult to detect their spin states. Herein, efforts have been made to introduce magnetism in ME-AFM Cr2O3 by mechanically milling it with a ferromagnetic (FM) α-Fe. Formation of pure phase nanocomposites is evidenced from the microstructural and hyperfine investigations. Phenomena like decrement in crystallite size and unit cell parameters (a & c) with the evolution of lattice strain are also observed with the increase in milling duration. Sample synthesized with highest milling duration shows the signature of exchange bias (Hex) along with enhancement of coercivity (Hc) at low temperature. Most importantly, the presence of thermo-remanent-magnetization above the room temperature and high blocking temperature (TB) make the material suitable for fabrication of ME based memory devices.

Original languageEnglish
Article number130170
JournalMaterials Letters
Volume300
DOIs
Publication statusPublished - Oct 1 2021

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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