Room-temperature Ba(Fe1-xCox)2As2 is not tetragonal: Direct observation of magnetoelastic interactions in pnictide superconductors

Claudia Cantoni; Michael A. McGuire; Bayrammurad Saparov; Andrew F. May; Trevor Keiber; Frank Bridges; Athena S. Sefat; Brian C. Sales

doi:10.1002/adma.201404079

Room-temperature Ba(Fe_1-xCo_x)₂As₂ is not tetragonal: Direct observation of magnetoelastic interactions in pnictide superconductors

Claudia Cantoni
, Michael A. McGuire
, Bayrammurad Saparov
, Andrew F. May
, Trevor Keiber
, Frank Bridges
, Athena S. Sefat
, Brian C. Sales

Correlated Electron Materials

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Lattice distortions corresponding to Ba displacements with respect to the FeAs sublattice are revealed to break the room-temperature tetragonal symmetry in Ba(Fe_1-xCo_x)₂As_2. The displacements yield twin domains of the size of ≈10 nm. The domain size correlates with the magnitude of the local Fe magnetic moment and its non-monotonic dependence on Co concentration.

Original language	English
Pages (from-to)	2715-2721
Number of pages	7
Journal	Advanced Materials
Volume	27
Issue number	17
DOIs	https://doi.org/10.1002/adma.201404079
State	Published - Jun 5 2015

Keywords

iron-based superconductors
lattice distortions
local magnetic moment
scanning transmission electron microscopy

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title = "Room-temperature Ba(Fe1-xCox)2As2 is not tetragonal: Direct observation of magnetoelastic interactions in pnictide superconductors",

abstract = "Lattice distortions corresponding to Ba displacements with respect to the FeAs sublattice are revealed to break the room-temperature tetragonal symmetry in Ba(Fe1-xCox)2As2. The displacements yield twin domains of the size of ≈10 nm. The domain size correlates with the magnitude of the local Fe magnetic moment and its non-monotonic dependence on Co concentration.",

keywords = "iron-based superconductors, lattice distortions, local magnetic moment, scanning transmission electron microscopy",

author = "Claudia Cantoni and McGuire, \{Michael A.\} and Bayrammurad Saparov and May, \{Andrew F.\} and Trevor Keiber and Frank Bridges and Sefat, \{Athena S.\} and Sales, \{Brian C.\}",

note = "Publisher Copyright: {\textcopyright} 2015 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

year = "2015",

month = jun,

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doi = "10.1002/adma.201404079",

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journal = "Advanced Materials",

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TY - JOUR

T1 - Room-temperature Ba(Fe1-xCox)2As2 is not tetragonal

T2 - Direct observation of magnetoelastic interactions in pnictide superconductors

AU - Cantoni, Claudia

AU - McGuire, Michael A.

AU - Saparov, Bayrammurad

AU - May, Andrew F.

AU - Keiber, Trevor

AU - Bridges, Frank

AU - Sefat, Athena S.

AU - Sales, Brian C.

PY - 2015/6/5

Y1 - 2015/6/5

N2 - Lattice distortions corresponding to Ba displacements with respect to the FeAs sublattice are revealed to break the room-temperature tetragonal symmetry in Ba(Fe1-xCox)2As2. The displacements yield twin domains of the size of ≈10 nm. The domain size correlates with the magnitude of the local Fe magnetic moment and its non-monotonic dependence on Co concentration.

AB - Lattice distortions corresponding to Ba displacements with respect to the FeAs sublattice are revealed to break the room-temperature tetragonal symmetry in Ba(Fe1-xCox)2As2. The displacements yield twin domains of the size of ≈10 nm. The domain size correlates with the magnitude of the local Fe magnetic moment and its non-monotonic dependence on Co concentration.

KW - iron-based superconductors

KW - lattice distortions

KW - local magnetic moment

KW - scanning transmission electron microscopy

UR - https://www.scopus.com/pages/publications/84928752573

U2 - 10.1002/adma.201404079

DO - 10.1002/adma.201404079

M3 - Article

AN - SCOPUS:84928752573

SN - 0935-9648

VL - 27

SP - 2715

EP - 2721

JO - Advanced Materials

JF - Advanced Materials

IS - 17

ER -

Room-temperature Ba(Fe_1-xCo_x)₂As₂ is not tetragonal: Direct observation of magnetoelastic interactions in pnictide superconductors

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Keywords

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