Common effect of chemical and external pressures on the magnetic properties of RCoPO (R = La, Pr) (Articolo in rivista)

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  • Common effect of chemical and external pressures on the magnetic properties of RCoPO (R = La, Pr) (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.87.064401 (literal)
Alternative label
  • Prando, G. a , Bonfà, P .b, Profeta, G. c, Khasanov, R. d, Bernardini, F. e, Mazzani, M b, Brüning, E.M. a, Pal, A. f, Awana, V.P.S. f, Grafe, H.-J. a, Büchner, B. a g, De Renzi, R. b, Carretta, P. h, Sanna, S. h (2013)
    Common effect of chemical and external pressures on the magnetic properties of RCoPO (R = La, Pr)
    in Physical review. B, Condensed matter and materials physics (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Prando, G. a , Bonfà, P .b, Profeta, G. c, Khasanov, R. d, Bernardini, F. e, Mazzani, M b, Brüning, E.M. a, Pal, A. f, Awana, V.P.S. f, Grafe, H.-J. a, Büchner, B. a g, De Renzi, R. b, Carretta, P. h, Sanna, S. h (literal)
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  • 87 (literal)
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  • 6 (literal)
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  • a Leibniz-Institut für Festkörper- und Werkstoffforschung (IFW) Dresden, D-01171 Dresden, Germany b Dipartimento di Fisica and Unità CNISM di Parma, Università di Parma, I-43124 Parma, Italy c Department of Physical and Chemical Sciences, SPIN-CNR, Università dell'Aquila, I-67100 L'Aquila, Italy d Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland e IOM-CNR and Dipartimento di Fisica, Università di Cagliari, I-09042 Monserrato (Ca), Italy f National Physical Laboratory (CSIR), New Delhi 110012, India g Institut für Festkörperphysik, Technische Universität Dresden, D-01062 Dresden, Germany h Dipartimento di Fisica, Unità CNISM di Pavia, Università di Pavia, I-27100 Pavia, Italy (literal)
Titolo
  • Common effect of chemical and external pressures on the magnetic properties of RCoPO (R = La, Pr) (literal)
Abstract
  • We report a detailed investigation of RCoPO (R = La, Pr) and LaCoAsO materials performed by means of muon spin spectroscopy. Zero-field measurements show that the electrons localized on the Pr3+ ions do not play any role in the static magnetic properties of the compounds. Magnetism at the local level is indeed fully dominated by the weakly itinerant ferromagnetism from the Co sublattice only. The increase of the chemical pressure triggered by the different ionic radii of La3+ and Pr3+, on the other hand, plays a crucial role in enhancing the value of the magnetic critical temperature and can be mimicked by the application of external hydrostatic pressure up to 24 kbar. A sharp discontinuity in the local magnetic field at the muon site in LaCoPO at around 5 kbar suggests a sizable modification in the band structure of the material upon increasing pressure. This scenario is qualitatively supported by ab initio density-functional-theory calculations.[object Object] (literal)
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