"Towards Bulk 49K Superconductivity in the Intermetallic CaFe2As2"
Mr. Tyler Drye

Nov 18, 2013

講演題目: Towards Bulk 49 K Superconductivity in the Intermetallic CaFe2As2
講 師 : Mr. Tyler Drye
     Department of Physics, University of Maryland College Park
(Visiting scholar by ICMR International Research Fellowship)
日 時 : 平成25年11月18日 (月) 15:00-16:00
場 所 : 北海道大学理学部2号館409室(2-4-09)

要 旨 :
The highest achievable superconducting critical temperature (Tc) in intermetallic iron-pnictide superconductors (specifically, the 122 family) was heald to be 39K when K is substituted for Ba in BaFe2As2. Our group was among the first to report traces of superconductivity in the 40-50K range when rare earth elements are doped for Ca in CaFe2As2. Unfortunately, these materials display a drastically low shielding volume fraction and correspondingly low critical current densities. Recent studies aimed at increasing this volume fraction, including high pressure synthesis and unusual doping schemes, have met with varying levels of success. This talk will detail these efforts and the outlook for bulk superconductivity in this system.

世話人  柳澤達也

タイラー氏の講演の様子 タイラー氏の講演の様子

Category: 支部講演会 | Static URL: /seminar/20131118.htm | Edit
Syndicate this site (XML)