Size effect in nanocrystalline manganites La(1-x)A(x)MnO(3) with A = Ag, Sr / Teplykh AE,Bogdanov SG,Valiev EZ,Pirogov AN,Dorofeev YA,Ostroushko AA,Udilov AE,Kazantzev VA // PHYSICA B-CONDENSED MATTER. - 2004. - V. 350, l. 1-3. - P. 55-58.

ISSN/EISSN:

0921-4526 / нет данных

Type:

Article; Proceedings Paper

Abstract:

Nanocrystalline manganites La0.9Ag0.1MnO3, La0.7Ag0.3MnO3, and La0.7Sr0.3MnO3 have been synthesized by pyrolysis and subjected to isothermal annealing. The atomic, magnetic, and mesoscopic structures of these manganites were investigated using magnetic measurements as well as X-ray and neutron diffraction. Particles of sizes ranging from 30-40 to 600-700nm coalesced with an increase in the annealing temperature from 600degreesC to 1300degreesC. All investigated samples had a rhombohedral structure and were ferromagnetic. The Curie temperature of the samples containing silver decreased while that of the samples containing strontium increased with the annealing temperature (i.e. with the growth in particle size). The magnetization of the Mn ions increased with annealing in all three systems. It is reasonable to assume that the growing size of the nanoparticles lead to an increased magnetization owing to the reduction of the angle between the nearest magnetic moments of the Mn ions. (C) 2004 Elsevier B.V. All rights reserved.

Author keywords:

nanocrystalline manganites; crystal and magnetic structure; size effect FINE-PARTICLE

DOI:

10.1016/j.physb.2004.03.252

Web of Science ID:

ISI:000223285700013

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUL 15
Note	3rd European Conference on Neutron Scattering (ECNS 2003), Montpellier, FRANCE, SEP 03-06, 2003
Organization	European Neutron Round Table; French Minist Rech; Ctr Natl Rech Sci; Commiss Energ Atom; Reg Languedoc Roussillon; Agglomerat Montpellier; Univ Montpellier II
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	FINE-PARTICLE
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	teplykh@uraltc.ru
ResearcherID-Numbers	Bogdanov, Savva/K-1613-2013 valiev, eduard/J-9337-2013 Pirogov, Alexander/K-8115-2013 Aleksander, Teplykh/J-5571-2013
ORCID-Numbers	Bogdanov, Savva/0000-0003-2327-1180 valiev, eduard/0000-0002-0760-0370 Pirogov, Alexander/0000-0001-7321-1245 Aleksander, Teplykh/0000-0002-3698-9100
Number-of-Cited-References	4
Usage-Count-Since-2013	2
Journal-ISO	Physica B
Doc-Delivery-Number	845ZZ