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Title: Magnetic structure of the high temperature superconductor Gd{sub 1–x}Th{sub x}FeAsO

The magnetic structure of the high temperature superconductor Gd{sub 1–x}Th{sub x}FeAsO (x = 0, 0.25) has been determined by neutron powder diffraction. The Gd moments were found to order at T{sub N} ∼ 4 K and to lie in the basal plane, and form alternating ferromagnetic sheets along the c-axis. The orientation of the gadolinium moments in both the doped and undoped compounds has been confirmed using {sup 155}Gd Mössbauer spectroscopy.
Authors:
;  [1] ;  [2] ; ;  [3]
  1. Physics Department and Centre for the Physics of Materials, McGill University, 3600 University Street, Montreal, Quebec H3A 2T8 (Canada)
  2. School of Physical, Environmental and Mathematical Sciences, UNSW Canberra at the Australian Defence Force Academy, Canberra, BC 2610 (Australia)
  3. Department of Physics, Zhejiang University, Hangzhou 310027 (China)
Publication Date:
OSTI Identifier:
22273882
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; ARSENATES; CONCENTRATION RATIO; DOPED MATERIALS; GADOLINIUM; GADOLINIUM 155; GADOLINIUM COMPOUNDS; HIGH-TC SUPERCONDUCTORS; IRON COMPOUNDS; MAGNETIC MOMENTS; MOESSBAUER EFFECT; NEUTRON DIFFRACTION; ORIENTATION; THORIUM COMPOUNDS