{sup 75}As NMR study of the oriented pnictide superconducting compound NdFeAsO{sub 0.83}F{sub 0.17}

Journal Article · Mon May 23 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4948153· OSTI ID:22608863

Pahari, Bholanath ^[1]

---

1. Department of Physics, Goa University, Taleigao Plateau, Goa-403206 (India)

Magnetization and {sup 75}As nuclear magnetic resonance (NMR) measurements in the superconductor NdFeAsO{sub 0.83}F{sub 0.17} (T{sub C}~46 K) are performed in order to investigate the effect of the Nd 4f electrons in the superconducting property. The magnetization curve displays a Nd 4f moments generated Curie-Weiss signal in the field of 7 T. {sup 75}As NMR spectra in the oriented sample (H{sub 0}‖ab) are recorded at 7 T in the temperature range 10–300 K and temperature dependent {sup 75}As NMR shift, K{sub ab} has been obtained. The K{sub ab} curve shows a Curie-Weiss type contribution. The magnitude of hyperfine field, H{sub hf} (4.4 kOe/μ{sub B}) estimated from the K{sub ab} vs χ plot indicates a non-negligible RKKY-type interaction between localized Nd 4f moments mediated by itinerant Fe 3d electrons.

• OSTI ID: 22608863
• Journal Information: AIP Conference Proceedings, Vol. 1731, Issue 1; Conference: DAE solid state physics symposium 2015, Uttar Pradesh (India), 21-25 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ARSENIC 75
ARSENIC COMPOUNDS
CURIE-WEISS LAW
ELECTRONS
FLUORINE COMPOUNDS
INTERACTIONS
INTERMETALLIC COMPOUNDS
IRON COMPOUNDS
MAGNETIZATION
NEODYMIUM COMPOUNDS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
PNICTIDES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0013-0065 K
TRANSITION TEMPERATURE