Published October 15, 2015 | Version v1
Journal article Metadata-only

Improvement of superconductivity in Fe1+yTe0.6Se0.4 induced by annealing with CaF2 and SmF3

Creators

  • 1. Department of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189 (China)
  • 2. Department of Applied Physics, The University of Tokyo, Bunkyo, Tokyo 113-8656 (Japan)

Description

Highlights: • The excess Fe can be removed by annealing with CaF2 and SmF3. Furthermore, the improvement of superconductivity of Fe1+yTe0.6Se0.4 single crystal is observed. • Compared with the pervious annealing materials, these two new annealing materials, CaF2 and SmF3, are safe and easy-handing. • After annealing, the largest Tc and Jc can exceed 13 K and 1.0 × 105 A/cm2 (5 K, in self-field). - Abstract: We report detailed studies of the CaF2 and SmF3 annealing effects in Fe1+yTe0.6Se0.4 single crystals. Superconductivity in Fe1+yTe0.6Se0.4 single crystals was improved after annealing, which strongly suggested the effectiveness of the CaF2 and SmF3 annealing. In detail, no matter which annealing material was employed, the largest values of superconducting transition temperature and critical current density reached about 14 K and 1.0 × 105 A/cm2 (5 K, in self-field), respectively. Furthermore, compared with the pervious annealing materials, CaF2 and SmF3 are safe and easy-handing

Availability note (English)

Available from http://dx.doi.org/10.1016/j.physc.2015.07.007

Additional details

Identifiers

DOI
10.1016/j.physc.2015.07.007;
PII
S0921-4534(15)00234-8;

Publishing Information

Journal Title
Physica. C, Superconductivity
Journal Volume
517
Journal Page Range
p. 16-19
ISSN
0921-4534
CODEN
PHYCE6

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47034826
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ANNEALING; CALCIUM FLUORIDES; CRITICAL CURRENT; CURRENT DENSITY; MONOCRYSTALS; SAMARIUM FLUORIDES; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CALCIUM HALIDES; CRYSTALS; CURRENTS; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; HEAT TREATMENTS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SAMARIUM COMPOUNDS; SAMARIUM HALIDES; THERMODYNAMIC PROPERTIES

Optional Information

Copyright
Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.