Phase diagram of Ca(Fe1-xCox)2As2
Creators
- 1. Leibnitz Inst. for Solid State and Materials Research, Dresden (Germany)
Description
We report on magnetic and thermodynamic measurements on Ca(Fe1-xCox)22As2(0≤x≤0.2) single crystals grown from Sn-flux. Upon Co substitution, the first-order structural/magnetic phase transition of CaFe2As2 is split and shifted to lower temperatures. Simultaneously, superconductivity evolves at low T. The superconducting volume fraction depends sensitively on the Co content and reaches 100 % only above the optimum doping level of x∝0.065, as the magnetic and structural transitions are completely suppressed. We discuss the phase diagram of Ca(Fe1-xCox)2As2 in consideration of recent investigations of CaFe2As2 under pressure, which revealed a sensitive pressure dependence of the structural/magnetic phase transitions and a Tc as high as 10 K at 3.5 kbar.
Additional details
Identifiers
Publishing Information
- Journal Title
- Verhandlungen der Deutschen Physikalischen Gesellschaft
- Journal Issue
- Regensburg 2010 issue
- Series
- Also available as printed version: Verhandlungen der Deutschen Physikalischen Gesellschaft v. 45(3)
- Journal Page Range
- [1 p.]
- ISSN
- 0420-0195
- CODEN
- VDPEAZ
Conference
- Title
- DPG Spring meeting 2010 of the condensed matter section with the divisions biological physics, chemical and polymer physics, crystallography, dielectric solids, dynamics and statistical physics, low temperature physics, magnetism, metal and material physics, physics of socio-economic systems, radiation and medical physics, semiconductor physics, surface science, thin films, vacuum science and technology as well as the working group industry and business, with job market, symposia, teachers' days, tutorials, exhibition of scientific instruments and literature
- Dates
- 21-26 Mar 2010
- Place
- Regensburg (Germany)
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 42067935
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CALCIUM COMPOUNDS; CHEMICAL COMPOSITION; COBALT ARSENIDES; CRITICAL TEMPERATURE; CRYSTAL-PHASE TRANSFORMATIONS; IRON ARSENIDES; MAGNETIC PROPERTIES; MAGNETISM; MONOCRYSTALS; PHASE DIAGRAMS; PRESSURE DEPENDENCE; PRESSURE RANGE MEGA PA; SUPERCONDUCTIVITY
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ARSENIC COMPOUNDS; ARSENIDES; COBALT COMPOUNDS; CRYSTALS; DIAGRAMS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; INFORMATION; IRON COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; PNICTIDES; PRESSURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE
Optional Information
- Notes
- Session: TT 20.4 Wed 10:15; No further information available