Zero-field muon spin relaxation studies of low-temperature magnetism in YbxY1−xBiPt (x =1.0 and 0.5)

✍ Scribed by A. Amato; P.C. Canfield; R. Feyerherm; Z. Fisk; F.N. Gygax; R.H. Heffner; E.A. Knetsch; D.E. MacLaughlin; H.R. Ott; A. Schenck; J.D. Thompson; U. Zimmermann

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 199 KB
• Volume: 186-188
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(93)90652-m

✦ Synopsis

Zero-field muon spin relaxation studies are reported for crystalline YbxYt_~BiPt for x = 1.0 and 0.5. YbBiPt exhibits an extremely large Cp/T ratio 3' = 8J/( K2 mol Yb) below T-~ 0.2 K and shows evidence for some type of magnetic order below 0.4 K from XAc. The ~SR data are consistent with a highly frustrated spin system segmented into two types of magnetic domains, one of which freezes into a disordered state below Tf--~0.4-0.5 K at a temperature relatively independent of the Yb concentration. The frozen spin moment of ~0.1p. B is highly reduced from the high temperature free-ion value, and is independent of the Yb concentration.