Magnetic Phase Diagram of Pr1-xLaxFe4P12(0 ≤x≤0.15)

Autor:	Hitoshi Sugawara, Yuji Aoki, Toshiro Sakakibara, Hideyuki Sato, Yuta Isobe, Takashi Tayama
Rok vydání:	2008
Předmět:	Phase transition Magnetization Materials science Ferromagnetism Condensed matter physics Phase (matter) Transition temperature General Physics and Astronomy Condensed Matter::Strongly Correlated Electrons Fermi surface Spontaneous magnetization Phase diagram
Zdroj:	Journal of the Physical Society of Japan. 77:78-83
ISSN:	1347-4073 0031-9015
Popis:	We report measurements of the dc magnetization of a series of Pr 1- x La x Fe 4 P 12 single crystals (0 ≤ x ≤0.15). The nonmagnetic order (A phase) evolves to a short-range one at a very small La concentration of about 3%, above which ferromagnetic ordering occurs. Both the ferromagnetic transition temperature and spontaneous magnetization increase abruptly above x > 0.03, although the Weiss temperature decreases substantially with increasing x . These results suggest a competition between the A phase and ferromagnetic state, and the role of Fermi surface nesting on the A phase transition is emphasized. The effect of La impurities on the high-field ordered state (B phase) in the [111] direction is also presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9fdd0cc792fb656be767f946906bb128 https://doi.org/10.1143/jpsjs.77sa.78 Zobrazit plný text záznamu