Magnetic properties and long-range magnetic order of Er3+ in Er2Ba 4Cu7O14.92

Autor:	G. Bottger, Hideyuki Sato, Peter M. Fischer, Andreas Dönni, Yuji Aoki, P. Berastegui
Rok vydání:	1998
Předmět:	Superconductivity Materials science Condensed matter physics Magnetic moment Neutron diffraction Antiferromagnetism Ising model Condensed Matter Physics Anisotropy Heat capacity Electronic Optical and Magnetic Materials Ion
Zdroj:	Journal of Magnetism and Magnetic Materials. :517-518
ISSN:	0304-8853
DOI:	10.1016/s0304-8853(97)00699-9
Popis:	The magnetic ordering of the Er ions in the high-temperature superconductor Er 2 Ba 4 Cu 7 O 14.92 ( T c = 89K) has been studied by low temperature heat capacity measurements and by neutron diffraction. A sharp peak in the specific heat at T N = 0.54K can be described by an anisotropic two-dimensional (2D) Ising model. By neutron diffraction we observed a quasi three-dimensional (3D) antiferromagnetic order of the Er ions. The magnetic Er moments are oriented parallel to the b -axis. This work proves that Er-247 is the first compound in the 247 system showing a long-range magnetic ordering.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f8564dd3ec4e408635623bef64f8bb4b https://doi.org/10.1016/s0304-8853(97)00699-9 Zobrazit plný text záznamu Full Text from ScienceDirect