Static magnetic order of Sr4A2O6Fe 2As2 (A = Sc and V) revealed by Mössbauer and muon spin relaxation spectroscopies

J. Munevar; D. R. Sánchez; M. Alzamora; E. Baggio-Saitovitch; J. P. Carlo; T. Goko; A. A. Aczel; T. J. Williams; G. M. Luke; Hai Hu Wen; Xiyu Zhu; Fei Han; Y. J. Uemura

doi:10.1103/PhysRevB.84.024527

Static magnetic order of Sr₄A₂O₆Fe ₂As₂ (A = Sc and V) revealed by Mössbauer and muon spin relaxation spectroscopies

J. Munevar, D. R. Sánchez, M. Alzamora, E. Baggio-Saitovitch, J. P. Carlo, T. Goko, A. A. Aczel, T. J. Williams, G. M. Luke, Hai Hu Wen, Xiyu Zhu, Fei Han, Y. J. Uemura

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Abstract

Static magnetic order of quasi-two-dimensional FeAs compounds Sr ₄A₂O_6-xFe₂As₂, with A= Sc and V, has been detected by Fe57 Mössbauer and muon spin relaxation (μSR) spectroscopies. The nonsuperconducting stoichiometric (x=0) A= Sc system exhibits a static internal/hyperfine magnetic field both at the Fe57 and μ⁺ sites, indicating antiferromagnetic order of Fe moments below T_N = 35 K with ~0.1 bohr magneton per Fe at T= 2 K. The superconducting and oxygen deficient (x=0.4) A= V system exhibits a static internal field only at the μ⁺ site below T_N~40 K, indicating static magnetic order of V moments coexisting with superconductivity without freezing of Fe moments. These results suggest that the 42622 FeAs systems belong to the same paradigm with the 1111 and 122 FeAs systems with respect to magnetic behavior of Fe moments.

Original language	English
Article number	024527
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.84.024527
State	Published - Jul 22 2011
Externally published	Yes

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Munevar, J., Sánchez, D. R., Alzamora, M., Baggio-Saitovitch, E., Carlo, J. P., Goko, T., Aczel, A. A., Williams, T. J., Luke, G. M., Wen, H. H., Zhu, X., Han, F., & Uemura, Y. J. (2011). Static magnetic order of Sr₄A₂O₆Fe ₂As₂ (A = Sc and V) revealed by Mössbauer and muon spin relaxation spectroscopies. Physical Review B - Condensed Matter and Materials Physics, 84(2), Article 024527. https://doi.org/10.1103/PhysRevB.84.024527

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title = "Static magnetic order of Sr4A2O6Fe 2As2 (A = Sc and V) revealed by M{\"o}ssbauer and muon spin relaxation spectroscopies",

abstract = "Static magnetic order of quasi-two-dimensional FeAs compounds Sr 4A2O6-xFe2As2, with A= Sc and V, has been detected by Fe57 M{\"o}ssbauer and muon spin relaxation (μSR) spectroscopies. The nonsuperconducting stoichiometric (x=0) A= Sc system exhibits a static internal/hyperfine magnetic field both at the Fe57 and μ+ sites, indicating antiferromagnetic order of Fe moments below TN = 35 K with ~0.1 bohr magneton per Fe at T= 2 K. The superconducting and oxygen deficient (x=0.4) A= V system exhibits a static internal field only at the μ+ site below TN~40 K, indicating static magnetic order of V moments coexisting with superconductivity without freezing of Fe moments. These results suggest that the 42622 FeAs systems belong to the same paradigm with the 1111 and 122 FeAs systems with respect to magnetic behavior of Fe moments.",

author = "J. Munevar and S{\'a}nchez, {D. R.} and M. Alzamora and E. Baggio-Saitovitch and Carlo, {J. P.} and T. Goko and Aczel, {A. A.} and Williams, {T. J.} and Luke, {G. M.} and Wen, {Hai Hu} and Xiyu Zhu and Fei Han and Uemura, {Y. J.}",

year = "2011",

month = jul,

day = "22",

doi = "10.1103/PhysRevB.84.024527",

language = "English",

volume = "84",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

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Munevar, J, Sánchez, DR, Alzamora, M, Baggio-Saitovitch, E, Carlo, JP, Goko, T, Aczel, AA, Williams, TJ, Luke, GM, Wen, HH, Zhu, X, Han, F & Uemura, YJ 2011, 'Static magnetic order of Sr₄A₂O₆Fe ₂As₂ (A = Sc and V) revealed by Mössbauer and muon spin relaxation spectroscopies', Physical Review B - Condensed Matter and Materials Physics, vol. 84, no. 2, 024527. https://doi.org/10.1103/PhysRevB.84.024527

TY - JOUR

T1 - Static magnetic order of Sr4A2O6Fe 2As2 (A = Sc and V) revealed by Mössbauer and muon spin relaxation spectroscopies

AU - Munevar, J.

AU - Sánchez, D. R.

AU - Alzamora, M.

AU - Baggio-Saitovitch, E.

AU - Carlo, J. P.

AU - Goko, T.

AU - Aczel, A. A.

AU - Williams, T. J.

AU - Luke, G. M.

AU - Wen, Hai Hu

AU - Zhu, Xiyu

AU - Han, Fei

AU - Uemura, Y. J.

PY - 2011/7/22

Y1 - 2011/7/22

N2 - Static magnetic order of quasi-two-dimensional FeAs compounds Sr 4A2O6-xFe2As2, with A= Sc and V, has been detected by Fe57 Mössbauer and muon spin relaxation (μSR) spectroscopies. The nonsuperconducting stoichiometric (x=0) A= Sc system exhibits a static internal/hyperfine magnetic field both at the Fe57 and μ+ sites, indicating antiferromagnetic order of Fe moments below TN = 35 K with ~0.1 bohr magneton per Fe at T= 2 K. The superconducting and oxygen deficient (x=0.4) A= V system exhibits a static internal field only at the μ+ site below TN~40 K, indicating static magnetic order of V moments coexisting with superconductivity without freezing of Fe moments. These results suggest that the 42622 FeAs systems belong to the same paradigm with the 1111 and 122 FeAs systems with respect to magnetic behavior of Fe moments.

AB - Static magnetic order of quasi-two-dimensional FeAs compounds Sr 4A2O6-xFe2As2, with A= Sc and V, has been detected by Fe57 Mössbauer and muon spin relaxation (μSR) spectroscopies. The nonsuperconducting stoichiometric (x=0) A= Sc system exhibits a static internal/hyperfine magnetic field both at the Fe57 and μ+ sites, indicating antiferromagnetic order of Fe moments below TN = 35 K with ~0.1 bohr magneton per Fe at T= 2 K. The superconducting and oxygen deficient (x=0.4) A= V system exhibits a static internal field only at the μ+ site below TN~40 K, indicating static magnetic order of V moments coexisting with superconductivity without freezing of Fe moments. These results suggest that the 42622 FeAs systems belong to the same paradigm with the 1111 and 122 FeAs systems with respect to magnetic behavior of Fe moments.

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DO - 10.1103/PhysRevB.84.024527

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SN - 1098-0121

VL - 84

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

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Static magnetic order of Sr₄A₂O₆Fe ₂As₂ (A = Sc and V) revealed by Mössbauer and muon spin relaxation spectroscopies

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