New-Structure-Type Fe-Based Superconductors: CaAFeAs (A = K, Rb, Cs) and SrAFeAs (A = Rb, Cs).
Fe-based superconductors have attracted research interest because of their rich structural variety, which is due to their layered crystal structures. Here we report the new-structure-type Fe-based superconductors CaAFe4As4 (A = K, Rb, Cs) and SrAFeAs (A = Rb, Cs), which can be regarded as hybrid pha...
| Publicado en: | Journal of the American Chemical Society Vol. 138; no. 10; pp. 3410 - 3416 |
|---|---|
| Autores principales: | , , , , , , , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
3/16/2016
|
| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=114330734&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 114330734 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 3/16/2016 vid: 138 iid: 10 pid: 997 pub: American Chemical Society artinfo: ui: 114330734 10.1021/jacs.5b12571 ppf: 3410 ppct: 6 formats: tig: atl: New-Structure-Type Fe-Based Superconductors: CaAFeAs (A = K, Rb, Cs) and SrAFeAs (A = Rb, Cs). aug: au: Akira Iyo Kenji Kawashima Tatsuya Kinjo Taichiro Nishio Shigeyuki Ishida Hiroshi Fujihisa Yoshito Gotoh Kunihiro Kihou Hiroshi Eisaki Yoshiyuki Yoshida affil: National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan IMRA Material R&D Co., Ltd., 2-1 Asahi-machi, Kariya, Aichi 448-0032, Japan Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan su: Superconductors Crystal structure Iron compounds Calcium compounds Solid solutions Crystallography sug: subj: Superconductors Crystal structure Iron compounds Calcium compounds Solid solutions Crystallography ab: Fe-based superconductors have attracted research interest because of their rich structural variety, which is due to their layered crystal structures. Here we report the new-structure-type Fe-based superconductors CaAFe4As4 (A = K, Rb, Cs) and SrAFeAs (A = Rb, Cs), which can be regarded as hybrid phases between AeFeAs (Ae = Ca, Sr) and AFeAs. Unlike solid solutions such as (Ba1-xKx)FeAs and (SrNa)FeAs, Ae and A do not occupy crystallographically equivalent sites because of the large differences between their ionic radii. Rather, the Ae and A layers are inserted alternately between the FeAs layers in the c-axis direction in AeAFeAs (AeA1144). The ordering of the Ae and A layers causes a change in the space group from I4/mmm to P4/mmm, which is clearly apparent in powder X-ray diffraction patterns. AeA1144 is the first known structure of this type among not only Fe-based superconductors but also other materials. AeA1144 is formed as a line compound, and therefore, each AeA1144 has its own superconducting transition temperature of approximately 31-36 K. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2016 holdings: @attributes: islocal: N |
|---|