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Title: Magnetism of Ir 5 + -based double perovskites: Unraveling its nature and the influence of structure

Abstract

A combination of x-ray-diffraction, x-ray absorption, x-ray magnetic circular dichroism, macroscopic magnetization, and muon-spin relaxation measurements is used to investigate the interplay between structure (both crystallography and microstructure) and magnetism in Sr 2 YIrO 6 as a function of both chemical (Ca-doping) and physical (hydrostatic) pressure. X-ray absorption spectroscopy clearly shows that the physical pressure is more effective in modifying the structure. On the other hand, the dichroic measurements evidence a constant magnetic signal with physical pressure and strong differences with Ca-doping. Muon-spin relaxation reveals the presence of magnetic order, even when this is hidden in the magnetization data. From the combined analysis, the magnetic results are explained in terms of the presence of Ir 6+ or Ir 4+ ions in magnetic clusters, most likely located at and triggered by antisite disorder. The measurements under high physical pressure indicate that the magnetic state is independent of the crystallographic details such as Ir-O distances and Ir-O-Y angles.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1];  [2]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [3];  [4]; ORCiD logo [5];  [6];  [7]
  1. Consejo Superior de Investigaciones Científicas (CSIC) and Univ. de Zaragoza, Zaragoza (Spain). Inst. de Ciencia de Materiales de Aragón
  2. European Synchrotron Radiation Facility (ESRF), Grenoble (France); Centro Univ. de la Defensa de Zaragoza, Zaragoza (Spain)
  3. Consejo Superior de Investigaciones Científicas (CSIC), Madrid (Spain). Inst. de Ciencia de Materiales de Madrid
  4. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Lab. for Muon-Spin Spectroscopy
  5. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  6. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Universidade Federal do ABC, Santo André (Brazil). Centro de Ciências Naturais e Humanas
  7. Ehime Univ., Matsuyama (Japan); Tokyo Inst. of Technology, Tokyo (Japan). Earth-Life Science Inst.
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Spanish Ministerio de Economia y Competitividad (MINECO); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; European Union (EU); European Social Fund (ESF); Sao Paulo Research Foundation (FAPESP)
OSTI Identifier:
1596930
Grant/Contract Number:  
AC02-06CH11357; 2016/24137-3
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 101; Journal Issue: 1; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Laguna-Marco, M. A., Arias-Egido, E., Piquer, C., Cuartero, V., Hernández-López, L., Kayser, P., Alonso, J. A., Barker, J. A. T., Fabbris, G., Escanhoela, C. A., and Irifune, T. Magnetism of Ir5+ -based double perovskites: Unraveling its nature and the influence of structure. United States: N. p., 2020. Web. doi:10.1103/PhysRevB.101.014449.
Laguna-Marco, M. A., Arias-Egido, E., Piquer, C., Cuartero, V., Hernández-López, L., Kayser, P., Alonso, J. A., Barker, J. A. T., Fabbris, G., Escanhoela, C. A., & Irifune, T. Magnetism of Ir5+ -based double perovskites: Unraveling its nature and the influence of structure. United States. doi:10.1103/PhysRevB.101.014449.
Laguna-Marco, M. A., Arias-Egido, E., Piquer, C., Cuartero, V., Hernández-López, L., Kayser, P., Alonso, J. A., Barker, J. A. T., Fabbris, G., Escanhoela, C. A., and Irifune, T. Thu . "Magnetism of Ir5+ -based double perovskites: Unraveling its nature and the influence of structure". United States. doi:10.1103/PhysRevB.101.014449.
@article{osti_1596930,
title = {Magnetism of Ir5+ -based double perovskites: Unraveling its nature and the influence of structure},
author = {Laguna-Marco, M. A. and Arias-Egido, E. and Piquer, C. and Cuartero, V. and Hernández-López, L. and Kayser, P. and Alonso, J. A. and Barker, J. A. T. and Fabbris, G. and Escanhoela, C. A. and Irifune, T.},
abstractNote = {A combination of x-ray-diffraction, x-ray absorption, x-ray magnetic circular dichroism, macroscopic magnetization, and muon-spin relaxation measurements is used to investigate the interplay between structure (both crystallography and microstructure) and magnetism in Sr2 YIrO6 as a function of both chemical (Ca-doping) and physical (hydrostatic) pressure. X-ray absorption spectroscopy clearly shows that the physical pressure is more effective in modifying the structure. On the other hand, the dichroic measurements evidence a constant magnetic signal with physical pressure and strong differences with Ca-doping. Muon-spin relaxation reveals the presence of magnetic order, even when this is hidden in the magnetization data. From the combined analysis, the magnetic results are explained in terms of the presence of Ir6+ or Ir4+ ions in magnetic clusters, most likely located at and triggered by antisite disorder. The measurements under high physical pressure indicate that the magnetic state is independent of the crystallographic details such as Ir-O distances and Ir-O-Y angles.},
doi = {10.1103/PhysRevB.101.014449},
journal = {Physical Review B},
number = 1,
volume = 101,
place = {United States},
year = {2020},
month = {1}
}

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