Electron magnetic resonance (EMR) in sonochemically prepared doped nano-manganites

A. I. Shames; E. Rozenberg; G. Gorodetsky; I. Felner; E. Sominski; G. Pang; A. Gedanken

doi:10.1016/j.cap.2005.06.008

Electron magnetic resonance (EMR) in sonochemically prepared doped nano-manganites

A. I. Shames, E. Rozenberg, G. Gorodetsky, I. Felner, E. Sominski, G. Pang, A. Gedanken

Department of Chemistry

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

5 Scopus citations

Abstract

X-band electron magnetic resonance method was explored for study of sonochemically prepared nano-powders of La-based doped manganites: La_0.7Sr_0.3MnO₃ and La_0.9Ca_0.1MnO₃ at 115 ≤ T ≤ 600 K temperature interval, including main characteristic points of its magnetic transitions. The data obtained were compared with those for crushed bulk single crystals of the same compositions. It is shown that nano-powder of La_0.7Sr_0.3MnO₃ has the same ferromagnetic ordering as its bulk counterpart, being more homogeneous and less anisotropic. While, nano-powder of La_0.9Ca_0.1MnO₃ shows two distinct ferromagnetic phases in a marked contrast to the bulk sample, where complex magnetic structure comprising canted antiferromagnetic matrix and ferromagnetic clusters is observed. To explain the observed phenomena, the crucial role of nano-scale grain size and its interplay with spin and charge degrees of freedom in considered systems are discussed.

Original language	English
Pages (from-to)	21-27
Number of pages	7
Journal	Current Applied Physics
Volume	7
Issue number	1
DOIs	https://doi.org/10.1016/j.cap.2005.06.008
State	Published - Jan 2007

Bibliographical note

Funding Information:
This work was partially supported by ISF grant 485/05 and IIF. The authors thank Dr. M. Auslender for helpful discussions and Prof. Ya. Mukovskii for growing of LSMO-2 and LCMO single crystals. The authors also gratefully acknowledge Korea University’s support for the Korea University’s 100th Anniversary Symposium on the State of the Art and the Prospect of the Interdisciplinary Nano Sciences.

Funding

This work was partially supported by ISF grant 485/05 and IIF. The authors thank Dr. M. Auslender for helpful discussions and Prof. Ya. Mukovskii for growing of LSMO-2 and LCMO single crystals. The authors also gratefully acknowledge Korea University’s support for the Korea University’s 100th Anniversary Symposium on the State of the Art and the Prospect of the Interdisciplinary Nano Sciences.

Funders	Funder number
International Iguana Foundation
Israel Science Foundation	485/05

Keywords

Doped bulk and nanometer sized CMR manganites
Ferromagnetic and electron paramagnetic resonance

Access to Document

10.1016/j.cap.2005.06.008

Cite this

@article{a3ad90af39354f5f92c962cc7cc6b92d,

title = "Electron magnetic resonance (EMR) in sonochemically prepared doped nano-manganites",

abstract = "X-band electron magnetic resonance method was explored for study of sonochemically prepared nano-powders of La-based doped manganites: La0.7Sr0.3MnO3 and La0.9Ca0.1MnO3 at 115 ≤ T ≤ 600 K temperature interval, including main characteristic points of its magnetic transitions. The data obtained were compared with those for crushed bulk single crystals of the same compositions. It is shown that nano-powder of La0.7Sr0.3MnO3 has the same ferromagnetic ordering as its bulk counterpart, being more homogeneous and less anisotropic. While, nano-powder of La0.9Ca0.1MnO3 shows two distinct ferromagnetic phases in a marked contrast to the bulk sample, where complex magnetic structure comprising canted antiferromagnetic matrix and ferromagnetic clusters is observed. To explain the observed phenomena, the crucial role of nano-scale grain size and its interplay with spin and charge degrees of freedom in considered systems are discussed.",

keywords = "Doped bulk and nanometer sized CMR manganites, Ferromagnetic and electron paramagnetic resonance",

author = "Shames, {A. I.} and E. Rozenberg and G. Gorodetsky and I. Felner and E. Sominski and G. Pang and A. Gedanken",

note = "Funding Information: This work was partially supported by ISF grant 485/05 and IIF. The authors thank Dr. M. Auslender for helpful discussions and Prof. Ya. Mukovskii for growing of LSMO-2 and LCMO single crystals. The authors also gratefully acknowledge Korea University{\textquoteright}s support for the Korea University{\textquoteright}s 100th Anniversary Symposium on the State of the Art and the Prospect of the Interdisciplinary Nano Sciences.",

year = "2007",

month = jan,

doi = "10.1016/j.cap.2005.06.008",

language = "אנגלית",

volume = "7",

pages = "21--27",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Electron magnetic resonance (EMR) in sonochemically prepared doped nano-manganites

AU - Shames, A. I.

AU - Rozenberg, E.

AU - Gorodetsky, G.

AU - Felner, I.

AU - Sominski, E.

AU - Pang, G.

AU - Gedanken, A.

N1 - Funding Information: This work was partially supported by ISF grant 485/05 and IIF. The authors thank Dr. M. Auslender for helpful discussions and Prof. Ya. Mukovskii for growing of LSMO-2 and LCMO single crystals. The authors also gratefully acknowledge Korea University’s support for the Korea University’s 100th Anniversary Symposium on the State of the Art and the Prospect of the Interdisciplinary Nano Sciences.

PY - 2007/1

Y1 - 2007/1

N2 - X-band electron magnetic resonance method was explored for study of sonochemically prepared nano-powders of La-based doped manganites: La0.7Sr0.3MnO3 and La0.9Ca0.1MnO3 at 115 ≤ T ≤ 600 K temperature interval, including main characteristic points of its magnetic transitions. The data obtained were compared with those for crushed bulk single crystals of the same compositions. It is shown that nano-powder of La0.7Sr0.3MnO3 has the same ferromagnetic ordering as its bulk counterpart, being more homogeneous and less anisotropic. While, nano-powder of La0.9Ca0.1MnO3 shows two distinct ferromagnetic phases in a marked contrast to the bulk sample, where complex magnetic structure comprising canted antiferromagnetic matrix and ferromagnetic clusters is observed. To explain the observed phenomena, the crucial role of nano-scale grain size and its interplay with spin and charge degrees of freedom in considered systems are discussed.

AB - X-band electron magnetic resonance method was explored for study of sonochemically prepared nano-powders of La-based doped manganites: La0.7Sr0.3MnO3 and La0.9Ca0.1MnO3 at 115 ≤ T ≤ 600 K temperature interval, including main characteristic points of its magnetic transitions. The data obtained were compared with those for crushed bulk single crystals of the same compositions. It is shown that nano-powder of La0.7Sr0.3MnO3 has the same ferromagnetic ordering as its bulk counterpart, being more homogeneous and less anisotropic. While, nano-powder of La0.9Ca0.1MnO3 shows two distinct ferromagnetic phases in a marked contrast to the bulk sample, where complex magnetic structure comprising canted antiferromagnetic matrix and ferromagnetic clusters is observed. To explain the observed phenomena, the crucial role of nano-scale grain size and its interplay with spin and charge degrees of freedom in considered systems are discussed.

KW - Doped bulk and nanometer sized CMR manganites

KW - Ferromagnetic and electron paramagnetic resonance

UR - http://www.scopus.com/inward/record.url?scp=33749331554&partnerID=8YFLogxK

U2 - 10.1016/j.cap.2005.06.008

DO - 10.1016/j.cap.2005.06.008

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:33749331554

SN - 1567-1739

VL - 7

SP - 21

EP - 27

JO - Current Applied Physics

JF - Current Applied Physics

IS - 1

ER -

Electron magnetic resonance (EMR) in sonochemically prepared doped nano-manganites

Abstract

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this