Quintuple perovskites Ln(2)Ba(3)Fe(5-x)Co(x)O(15-delta) (Ln = Sm, Eu): nanoscale ordering and unconventional magnetism / Kundu Asish K.,Lebedev Oleg I.,Volkova Nadezhda E.,Seikh Md. Motin,Caignaert Vincent,Cherepanov Vladimir A.,Raveau Bernard // JOURNAL OF MATERIALS CHEMISTRY C. - 2015. - V. 3, l. 21. - P. 5398-5405.

ISSN/EISSN:

2050-7526 / 2050-7534

Type:

Article

Abstract:

Quintuple perovskites Ln(2)Ba(3)Fe(5-x)Co(x)O(15-delta), with Ln = Sm, Eu have been synthesized for x values varying from 0 to 2. The HRTEM and HAADF investigations show that these oxides are ordered at the nanoscale with a tetragonal ``a(p) x a(p) x 5a(p){''} lattice, corresponding to an ordered fivefold stacking of the Ba and Ln layers. These structures are in fact chemically twinned, so that only cubic or pseudo-cubic symmetry is detected by XRD investigation. The detailed magnetic study shows the existence of short range antiferromagnetic ordering, canted in nature in the temperature range from 5 to 330 K. This particular behavior is interpreted on the basis of local antiferromagnetic M-O-M (M = Fe/Co) interactions within the nanodomains that are limited by pinning of the Co/Fe spins at the boundaries.

Author keywords:

ND; TRANSITION; RE; GD; HO; DY

DOI:

10.1039/c5tc00494b

Web of Science ID:

ISI:000354965900006

Соавторы в МНС:

Другие поля

Поле	Значение
Publisher	ROYAL SOC CHEMISTRY
Address	THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Language	English
EISSN	2050-7534
Keywords-Plus	ND; TRANSITION; RE; GD; HO; DY
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Applied
Author-Email	bernard.raveau@ensicaen.fr
ResearcherID-Numbers	Cherepanov, Vladimir/E-6451-2014
ORCID-Numbers	Cherepanov, Vladimir/0000-0003-3653-6459
Funding-Acknowledgement	Ural Federal University {[}1039]
Funding-Text	The research performed by the authors from Ural Federal University has been made within the State Task No. 1039.
Number-of-Cited-References	22
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	23
Journal-ISO	J. Mater. Chem. C
Doc-Delivery-Number	CI7SV