Aging effect in magnetotransport property of oxygen adsorbed BaFe{sub 2}As{sub 2}
- School of Advanced Sciences, VIT University, Chennai Campus-600127, Tamilnadu (India)
Presence of oxygen (O{sub 2}) has been found by Energy Dispersive X-ray Analysis (EDAX) on the surfaces of flux grown BaFe{sub 2}As{sub 2} single crystals which were kept in air ambience for several months. Transport studies show that the O{sub 2} adsorbed crystals are more resistive and do not display any sharp slope change near 140 K which is the well known Spin Density Wave (SDW) transition temperature (T{sub SDW}) accompanying structural transition for as grown BaFe{sub 2}As{sub 2}. An anomalous slope change in resistivity is observed around 18 K at 0 and 5T. Magnetoresistance (MR) is noticed to increase as a function of applied field (H) quite differently than that for as grown crystals below T{sub SDW} which may be attributed to aging effect.
- OSTI ID:
- 22490479
- Journal Information:
- AIP Conference Proceedings, Vol. 1665, Issue 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Magnetic, Thermodynamic, and Transport Characterization of Na0.75CoO2 Single Crystals
Influence of thermal processing on magnetotransport characteristics of NdSr{sub 2}Mn{sub 2}O{sub 7+δ}