Magnetic phase transition in superconducting Sr2YRu0.95Cu0.05O6 observed by the Ru-99 Mossbauer effect

Authors
DeMarco, M Blackstead, HA Dow, JD Wu, MK Chen, DY Chien, FZ Haka, M Toorongian, S Fridmann, J
Citation
M. Demarco et al., Magnetic phase transition in superconducting Sr2YRu0.95Cu0.05O6 observed by the Ru-99 Mossbauer effect, PHYS REV B, 62(21), 2000, pp. 14301-14303
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
21
Year of publication
2000
Pages
14301 - 14303
Database
ISI
SICI code
0163-1829(200012)62:21<14301:MPTISS>2.0.ZU;2-K
Abstract
Ru-99 Mossbauer effect measurements at 4.2, 23, 30, and 40 K show that the hyperfine magnetic field vanishes near 30 K, lower than the superconducting onset temperature of 45 K in Sr2YRu0.95Cu0.05O6 The data confirm that supe rconductivity and homogeneous magnetic order coexist. The hyperfine magneti c held measured at 4.2 K is 58.5(0.8) T. The well-resolved set of 18 lines in the 4.2 K measurement enabled a determination of a new value, -0.293(0.0 05) nm, for the nuclear magnetic moment of the 3/2 state of Ru-99. The isom er shift in this compound was measured to be 0.13(0.01) mm/s and it is cons istent with a +5 charge state of Ru.