Article, 2024

Manifestation of chemical pressure: Magnetism and magnetostriction in nanoscale RFeO3 (R = Sm, Dy, Ho, and Lu)

Journal of the American Ceramic Society, ISSN 0002-7820, 1551-2916, Volume 107, 5, Pages 3368-3379, 10.1111/jace.19663

Contributors

Chaturvedi, Smita 0000-0001-7744-9605 (Corresponding author) [1] [2] [3] Shyam, Priyank 0000-0002-0043-797X (Corresponding author) [4] Liu, Ying 0000-0001-5834-6934 [3] [5] Srinivasan, Gopalan 0000-0002-5718-5451 [3]

Affiliations

  1. [1] Indian Institute of Science Education and Research Pune
    2. [NORA names: India; Asia, South];
  2. [2] Savitribai Phule Pune University
    3. [NORA names: India; Asia, South];
  3. [3] Oakland University
    4. [NORA names: United States; America, North; OECD];
  4. [4] Aarhus University
    5. [NORA names: AU Aarhus University; University; Denmark; Europe, EU; Nordic; OECD];
  5. [5] Hubei University
    6. [NORA names: China; Asia, East]

Abstract

Abstract The effect of ionic radii sizes on magnetostriction is studied in relation to structural and magnetic properties. To explore the effect of the chemical pressure, nanoparticles of rare‐earth (RE) orthoferrites, SmFeO 3 , DyFeO 3 , HoFeO 3 , and LuFeO 3 are studied using X‐ray diffraction, field emission scanning electron microscopy, and Raman spectroscopy. Magnetic and magnetostriction measurements are also performed. In these orthoferrites, the coordination of the RE ion is eightfold, whereas the RE ionic radii are significantly different, which directly influences the structural parameters. The distortion of FeO 6 octahedra is observed as a result of changing chemical pressure within the lattice. The different magnitudes of magnetostriction in RE orthoferrites can be attributed to the different degrees of distortion of FeO 6 octahedra, R–O dynamics, and spin–orbit interactions in the system. The maximum value of magnetostriction (∼ 19 ppm) and magnetization at 2 K (30.64 emu/g) is demonstrated by HoFeO 3 . Comparison of structural parameters of the samples to their respective bulk counterparts indicated relative structural distortion in nanoparticles.

Keywords

FeO 6 octahedra, LuFeO 3, R-O, RE ionic radius, RE ions, RFeO3, Raman spectroscopy, SmFeO 3, X-ray, X-ray diffraction, chemical pressure, comparison, comparison of structural parameters, coordination, degree, diffraction, distortion, dynamics, effect, electron microscopy, emission scanning electron microscopy, field, field emission scanning electron microscopy, interaction, ionic radius, ionic radius size, ions, lattice, magnetic properties, magnetization, magnetostriction, magnetostriction measurements, magnitude, magnitude of magnetostriction, maximum value, maximum value of magnetostriction, measurements, microscopy, nanoparticles, nanoscale, orthoferrites, parameters, pressure, properties, radius, radius size, rare earth, samples, scanning electron microscopy, size, spectroscopy, spin-orbit interaction, structural parameters, system, values of magnetostriction

Funders

  • Department of Science and Technology
  • Directorate for Engineering
  • United States Air Force Office of Scientific Research
  • Directorate for Mathematical & Physical Sciences
  • United States Air Force

Data Provider: Digital Science

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