Mechanical properties of FeSex superconductor

• Published in: Physica. C, Superconductivity Vol. 470; no. SUP1; pp. S411 - S412
• Main Authors: Pimentel, Jorge Luiz, Jurelo, Alcione Roberto, Foerster, Carlos Eugênio, Júnior, Pedro Rodrigues, Costa, Rosângela Menegotto
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.12.2010; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Elastic modulus; Elasticity, elastic constants; Exact sciences and technology; FeSe; Hardness; Instrumented indentation; Iron-based superconductor; Mechanical and acoustical properties of condensed matter; Mechanical and acoustical properties, elasticity, and ultrasonic attenuation; Mechanical properties of solids; Physics; Polycrystalline; Properties of type I and type II superconductors; Superconductivity; Tribology and hardness; FeSe; Elastic modulus; Polycrystalline; Instrumented indentation; Hardness; Iron-based superconductor; Superconducting transitions; Polycrystals; Mechanical properties; Iron selenides; Indentation; Fracture toughness; Superconductors; Solid state reaction; Semiconductivity
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2009.11.153

In the present work hardness and elastic modulus of FeSex superconductor are reported. Two different groups of polycrystalline samples were produced by a conventional solid-state reaction. One group presented superconductor behavior with TC<8K while another showed semiconducting behavior. Hardness and elastic modulus were 1.3GPa and 42GPa, respectively, for both groups. Also, no cracking was produced by indentations. This does not exclude this material have low fracture toughness as observed in other intermetallic compounds.