Spin-state crossover and low-temperature magnetic state in yttrium-doped Pr.sub.0.7./sub.Ca.sub.0.3./sub.CoO.sub.3./sub..

0423410 - FZÚ 2014 RIV US eng J - Článek v odborném periodiku
Knížek, Karel - Hejtmánek, Jiří - Maryško, Miroslav - Novák, Pavel - Šantavá, Eva - Jirák, Zdeněk - Naito, T. - Fujishiro, H. - de la Cruz, C.
Spin-state crossover and low-temperature magnetic state in yttrium-doped Pr_0.7Ca_0.3CoO₃.
Physical Review. B. Roč. 88, DEC (2013), "224412-1"-"224412-8". ISSN 1098-0121
Grant CEP: GA ČR(CZ) GAP204/11/0713
Institucionální podpora: RVO:68378271
Klíčová slova: cobaltites * mixed valence * spin state
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 3.664, rok: 2013
http://prb.aps.org/abstract/PRB/v88/i22/e224412

The structural and magnetic properties of two mixed-valence cobaltites with a formal population of 0.30 Co4+ ions per f, (Pr1-yYy)0.7Ca0.3CoO3 (y=0 and 0.15), have been studied down to very low temperatures by means of high-resolution neutron diffraction, SQUID magnetometry, and heat-capacity measurements. The results are interpreted within the scenario of the spin-state crossover from a room-temperature mixture of the intermediate-spin Co3+ and low-spin Co4+ (IS/LS) to the LS/LS mixture in the sample ground states.
Trvalý link: http://hdl.handle.net/11104/0229502