Magnetic structures and crystal field in the heavy electron materials YbAgGe and YbPtIn

Autor:	M. Rams, O. Trovarelli, Paul C. Canfield, Pierre Bonville, K. Królas, J. P. Sanchez, C. Geibel
Rok vydání:	2007
Předmět:	Crystal Materials science Solid-state physics Condensed matter physics Spins Magnetic structure Mössbauer effect Field (physics) Strongly correlated material Electron Condensed Matter Physics Electronic Optical and Magnetic Materials
Zdroj:	The European Physical Journal B. 55:77-84
ISSN:	1434-6036 1434-6028
DOI:	10.1140/epjb/e2007-00042-6
Popis:	We have examined the magnetic properties of the heavy electron compounds YbAgGe and YbPtIn by 170Yb Mossbauer spectroscopy down to 0.1 K, and the crystal field properties of YbAgGe by Perturbed Angular Correlations (PAC) measurements up to 900 K. In YbAgGe, we show that each of the two magnetically ordered phases below 0.8 K involves a specific incommensurate modulation of the Yb moment. An analysis of existing low temperature specific heat data suggests the persistence of fluctuations of the correlated Yb spins down to 0.1 K. The PAC data allow to discriminate among proposed Yb3+ crystal field level schemes. In YbPtIn, we show that the low temperature magnetic order phase has an antiferro-para structure, where zero moment Yb ions coexist with large moment ones, and that a 90° moment reorientation occurs at 1.4 K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b771041d52e2abedc4d7e7b75606dcd9 https://doi.org/10.1140/epjb/e2007-00042-6 Zobrazit plný text záznamu Plný text ve formátu PDF