Size and nonstoichiometry effects on magnetic properties La 0.5Ca0.5MnO3 manganite

E. Rozenberg; M. I. Tsindlekht; I. Felner; E. Sominski; A. Gedanken; Ya M. Mukovskii; Cheol Eui Lee

doi:10.1109/TMAG.2009.2018894

Size and nonstoichiometry effects on magnetic properties La _0.5Ca_0.5MnO₃ manganite

E. Rozenberg, M. I. Tsindlekht, I. Felner, E. Sominski, A. Gedanken, Ya M. Mukovskii, Cheol Eui Lee

Department of Physics

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

AC and dc magnetic measurements in temperature interval 5-350 K and at external magnetic field H ≤ 5 T were employed to probe the finite-size and nonstoichiometry effects on magnetic ordering of La_0.5Ca _0.5MnO₃ half-doped manganite compound. It is shown that the complex mixed magnetic ordering in bulk samples appears to be unstable regarding the both effects. The strongest one is the size effect, suppressing the mixed order and inducing the ferromagnetic-like one, which is characteristic also for other half-doped manganites. The small variations in cation composition (nonstoichiometry), which don't influence the crystal structure, lead to strong perturbations in the mixed magnetic ordering of the bulk. The results obtained are discussed in the terms of pronounced competition of spin, charge and lattice degrees of freedom, characteristic for doped manganites.

Original language	English
Article number	4957706
Pages (from-to)	2576-2579
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	45
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2009.2018894
Publication status	Published - 2009 Jun

Keywords

Magnetization processes
Manganese compounds
Nanotechnology

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2009.2018894

Cite this

@article{d2ae156b62e54152b9c860a686fbf4a9,

title = "Size and nonstoichiometry effects on magnetic properties La 0.5Ca0.5MnO3 manganite",

abstract = "AC and dc magnetic measurements in temperature interval 5-350 K and at external magnetic field H ≤ 5 T were employed to probe the finite-size and nonstoichiometry effects on magnetic ordering of La0.5Ca 0.5MnO3 half-doped manganite compound. It is shown that the complex mixed magnetic ordering in bulk samples appears to be unstable regarding the both effects. The strongest one is the size effect, suppressing the mixed order and inducing the ferromagnetic-like one, which is characteristic also for other half-doped manganites. The small variations in cation composition (nonstoichiometry), which don't influence the crystal structure, lead to strong perturbations in the mixed magnetic ordering of the bulk. The results obtained are discussed in the terms of pronounced competition of spin, charge and lattice degrees of freedom, characteristic for doped manganites.",

keywords = "Magnetization processes, Manganese compounds, Nanotechnology",

author = "E. Rozenberg and Tsindlekht, {M. I.} and I. Felner and E. Sominski and A. Gedanken and Mukovskii, {Ya M.} and Lee, {Cheol Eui}",

note = "Funding Information: This work was supported in part by the Israeli Science Foundation administered by the Israel Academy of Sciences and Humanities under Grant 845/05; and by the Korea Science and Engineering Foundation (NRL R0A-2008-000-20066-0, User Program of Proton Engineering Frontier Project, KRF-2006-005-J03601). The authors thank Dr. Mogilaynsky for help in XRD measurements.",

year = "2009",

month = jun,

doi = "10.1109/TMAG.2009.2018894",

language = "English",

volume = "45",

pages = "2576--2579",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "6",

}

TY - JOUR

T1 - Size and nonstoichiometry effects on magnetic properties La 0.5Ca0.5MnO3 manganite

AU - Rozenberg, E.

AU - Tsindlekht, M. I.

AU - Felner, I.

AU - Sominski, E.

AU - Gedanken, A.

AU - Mukovskii, Ya M.

AU - Lee, Cheol Eui

N1 - Funding Information: This work was supported in part by the Israeli Science Foundation administered by the Israel Academy of Sciences and Humanities under Grant 845/05; and by the Korea Science and Engineering Foundation (NRL R0A-2008-000-20066-0, User Program of Proton Engineering Frontier Project, KRF-2006-005-J03601). The authors thank Dr. Mogilaynsky for help in XRD measurements.

PY - 2009/6

Y1 - 2009/6

N2 - AC and dc magnetic measurements in temperature interval 5-350 K and at external magnetic field H ≤ 5 T were employed to probe the finite-size and nonstoichiometry effects on magnetic ordering of La0.5Ca 0.5MnO3 half-doped manganite compound. It is shown that the complex mixed magnetic ordering in bulk samples appears to be unstable regarding the both effects. The strongest one is the size effect, suppressing the mixed order and inducing the ferromagnetic-like one, which is characteristic also for other half-doped manganites. The small variations in cation composition (nonstoichiometry), which don't influence the crystal structure, lead to strong perturbations in the mixed magnetic ordering of the bulk. The results obtained are discussed in the terms of pronounced competition of spin, charge and lattice degrees of freedom, characteristic for doped manganites.

AB - AC and dc magnetic measurements in temperature interval 5-350 K and at external magnetic field H ≤ 5 T were employed to probe the finite-size and nonstoichiometry effects on magnetic ordering of La0.5Ca 0.5MnO3 half-doped manganite compound. It is shown that the complex mixed magnetic ordering in bulk samples appears to be unstable regarding the both effects. The strongest one is the size effect, suppressing the mixed order and inducing the ferromagnetic-like one, which is characteristic also for other half-doped manganites. The small variations in cation composition (nonstoichiometry), which don't influence the crystal structure, lead to strong perturbations in the mixed magnetic ordering of the bulk. The results obtained are discussed in the terms of pronounced competition of spin, charge and lattice degrees of freedom, characteristic for doped manganites.

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KW - Manganese compounds

KW - Nanotechnology

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