Size Effect in Nanocrystalline Manganites La1-xA xMnO3(A = Ag, Sr) / Teplykh A.E., Bogdanov S.G., Valiev É.Z., Pirogov A.N., Dorofeev Yu.A., Ostroushko A.A., Udilov A.E., Kazantsev V.A., Kar'kin A.E. // Physics of the Solid State. - 2003. - V. 45, l. 12. - P. 2328-2333.

ISSN:

10637834

Type:

Article

Abstract:

Nanocrystalline samples of the mangankes La0.9Ag 0.1MnO3, La0.7Ag0.3MnO3, and La0.7Sr0.3MnO3 were synthesized through pyrolysis and isothermally annealed. The atomic, subatomic, and magnetic structures of these manganites were studied using magnetic, x-ray, and neutron diffraction measurements. Increasing the annealing temperature from 600 to 1200°C coarsens the grains from 30-40 to 600-700 nm in size. All the samples studied have rhombohedral structure and are ferromagnets. The Curie temperature decreases for the samples doped by silver and increases for the samples doped by strontium as the anneal temperature is increased. The magnetization of the Mn ions increases with nanoparticle size in all the three systems, which indicates the presence of a size effect. © 2003 MAIK "Nauka/Interperiodica".

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DOI:

10.1134/1.1635506

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https://www.scopus.com/inward/record.uri?eid=2-s2.0-0347568500&doi=10.1134%2f1.1635506&partnerID=40&md5=b1a366defb68045b008f8040f91c7e8a

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Affiliations	Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoǐ 18, Yekaterinburg 620219, Russian Federation; Inst. of Phys./Applied Mathematics, Ural State University, Yekaterinburg 620083, Russian Federation
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Correspondence Address	Teplykh, A.E.; Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoǐ 18, Yekaterinburg 620219, Russian Federation
Language of Original Document	English
Abbreviated Source Title	Phys. Solid State
Source	Scopus