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Volumn 65, Issue 19, 2002, Pages 1-11

Coexistence of magnetism and ferroelectricity in perovskites

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Indexed keywords


EID: 84876571866     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.65.195120     Document Type: Article
Times cited : (19)

References (68)
  • 5
    • 0003533685 scopus 로고    scopus 로고
    • X. Gonze, Phys. Rev. B 55, 10 337 (1997);
    • (1997) Phys. Rev. B , vol.55 , Issue.10 , pp. 337
    • Gonze, X.1
  • 12
    • 85038342362 scopus 로고    scopus 로고
    • An extremely vast literature about (formula presented) has been produced in the last five years. For a recent review see Physics of Manganites, edited by T. A. Kaplan and S. D. Mahanti (Kluwer/Plenum, New York, 1999)
    • An extremely vast literature about (formula presented) has been produced in the last five years. For a recent review see Physics of Manganites, edited by T. A. Kaplan and S. D. Mahanti (Kluwer/Plenum, New York, 1999).
  • 19
    • 0034289756 scopus 로고    scopus 로고
    • For example, in ZnO the strong hybridization is responsible for the large piezoelectricity, but does not cause either the BEC anomaly or ferroelectricity
    • For example, in ZnO the strong hybridization is responsible for the large piezoelectricity, but does not cause either the BEC anomaly or ferroelectricity: N.A. Hill and U. Waghmare, Phys. Rev. B 62, 8802 (2000).
    • (2000) Phys. Rev. B , vol.62 , pp. 8802
    • Hill, N.A.1    Waghmare, U.2
  • 20
    • 85038330963 scopus 로고    scopus 로고
    • The BEC’s are larger than the formal charges (although perhaps not large enough to be described as “anomalous”) not only in ferroelectric perovskites, but also in some nonferroelectric rocksalt oxides (Ref. 15) (e.g., CaO, SrO, BaO) and rutiles (Ref. 16) (formula presented)
    • The BEC’s are larger than the formal charges (although perhaps not large enough to be described as “anomalous”) not only in ferroelectric perovskites, but also in some nonferroelectric rocksalt oxides (Ref. 15) (e.g., CaO, SrO, BaO) and rutiles (Ref. 16) (formula presented).
  • 25
    • 85038295059 scopus 로고    scopus 로고
    • We use a verison of PWSCF code originally implemented in SISSA, Trieste, and generalized by one of the authors to allow for spin polarization
    • We use a verison of PWSCF code originally implemented in SISSA, Trieste, and generalized by one of the authors to allow for spin polarization.
  • 41
    • 85038321525 scopus 로고    scopus 로고
    • the tetragonal distortion Ba are kept fixed, while O and Ti are moved against each other. The displacement ratios are
    • In the tetragonal distortion Ba are kept fixed, while O and Ti are moved against each other. The displacement ratios are.
  • 42
    • 0031123677 scopus 로고    scopus 로고
    • For a nice overview of the main features of magnetic ordering in manganise perovskites see
    • For a nice overview of the main features of magnetic ordering in manganise perovskites see D.I. Khomskii and G.A. Sawatzky, Solid State Commun. 102, 87 (1997).
    • (1997) Solid State Commun , vol.102 , pp. 87
    • Khomskii, D.I.1    Sawatzky, G.A.2
  • 43
    • 85038316035 scopus 로고    scopus 로고
    • Although this perfect agreement may be fortuitous, it has been shown that LSD calculations accurately describe the properties of (formula presented) (for example, the observed G-type AFM ordering is correctly found to be the lowest in energy)
    • Although this perfect agreement may be fortuitous, it has been shown that LSD calculations accurately describe the properties of (formula presented) (for example, the observed G-type AFM ordering is correctly found to be the lowest in energy).
  • 66
    • 85038345080 scopus 로고    scopus 로고
    • During the review process of this work, new structural data of single-crystal (formula presented) have been published (Ref. 45) which seem to challenge previous measurements (Ref. 37) and suggest that the major off-center distortion does not reside on Mn but on Y, as a consequence of oxygen rotations. Eventually, both these displacements may contribute to the ferroelectric state
    • During the review process of this work, new structural data of single-crystal (formula presented) have been published (Ref. 45) which seem to challenge previous measurements (Ref. 37) and suggest that the major off-center distortion does not reside on Mn but on Y, as a consequence of oxygen rotations. Eventually, both these displacements may contribute to the ferroelectric state.
  • 67
    • 85038309945 scopus 로고    scopus 로고
    • We are currently implementing a method based on self-interaction corrected pseudopotentials (Ref. 55) which seems promising of improving the LSDA results. Another interesting approach recently applied to study magnetic materials is the model GW used in Ref. 33
    • We are currently implementing a method based on self-interaction corrected pseudopotentials (Ref. 55) which seems promising of improving the LSDA results. Another interesting approach recently applied to study magnetic materials is the model GW used in Ref. 33.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.