Electron magnetic resonance (EMR) study of CaMn1-xRu xO3 perovskites: An inhomogeneous ground state induced by Ru-doping

A. I. Shames; E. Rozenberg; G. Gorodetsky; A. Maignan; C. Martin; M. Hervieu; B. Raveau

doi:10.1016/j.jmmm.2003.12.759

Electron magnetic resonance (EMR) study of CaMn_1-xRu _xO₃ perovskites: An inhomogeneous ground state induced by Ru-doping

A. I. Shames, E. Rozenberg, G. Gorodetsky, A. Maignan, C. Martin, M. Hervieu, B. Raveau

Department of Physics

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

3 Scopus citations

Abstract

X-band EMR measurements of polycrystalline CaMn_1-xRu _xO₃ (x = 0÷-0.40) samples were done at 120≤T≤400 K aiming to study the effect of Ru-induced magnetic ordering. High-temperature EMR spectra of pristine CaMnO₃ show a Lorentzian-like line with ΔH_pp ∼ 160 mT and g = 1.995±0.005, whose intensity diminishes, zeroing at Neel temperature T_N = 120 K. EMR evidences that Ru-doping modifies both paramagnetic and antiferromagnetic states, and creates an inhomogeneous phase separated ferro- and antiferromagnetic ground states at x > 0.06.

Original language	English
Pages (from-to)	e1627-e1629
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.759
State	Published - 1 Jan 2004

Keywords

Doped manganites
Ferromagnetic and electron paramagnetic resonance
Phase separation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2003.12.759

Cite this

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title = "Electron magnetic resonance (EMR) study of CaMn1-xRu xO3 perovskites: An inhomogeneous ground state induced by Ru-doping",

abstract = "X-band EMR measurements of polycrystalline CaMn1-xRu xO3 (x = 0÷-0.40) samples were done at 120≤T≤400 K aiming to study the effect of Ru-induced magnetic ordering. High-temperature EMR spectra of pristine CaMnO3 show a Lorentzian-like line with ΔHpp ∼ 160 mT and g = 1.995±0.005, whose intensity diminishes, zeroing at Neel temperature TN = 120 K. EMR evidences that Ru-doping modifies both paramagnetic and antiferromagnetic states, and creates an inhomogeneous phase separated ferro- and antiferromagnetic ground states at x > 0.06.",

keywords = "Doped manganites, Ferromagnetic and electron paramagnetic resonance, Phase separation",

author = "Shames, {A. I.} and E. Rozenberg and G. Gorodetsky and A. Maignan and C. Martin and M. Hervieu and B. Raveau",

note = "Funding Information: This work was supported by the ISF grant 209/01.",

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doi = "10.1016/j.jmmm.2003.12.759",

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T1 - Electron magnetic resonance (EMR) study of CaMn1-xRu xO3 perovskites

T2 - An inhomogeneous ground state induced by Ru-doping

AU - Shames, A. I.

AU - Rozenberg, E.

AU - Gorodetsky, G.

AU - Maignan, A.

AU - Martin, C.

AU - Hervieu, M.

AU - Raveau, B.

N1 - Funding Information: This work was supported by the ISF grant 209/01.

PY - 2004/1/1

Y1 - 2004/1/1

N2 - X-band EMR measurements of polycrystalline CaMn1-xRu xO3 (x = 0÷-0.40) samples were done at 120≤T≤400 K aiming to study the effect of Ru-induced magnetic ordering. High-temperature EMR spectra of pristine CaMnO3 show a Lorentzian-like line with ΔHpp ∼ 160 mT and g = 1.995±0.005, whose intensity diminishes, zeroing at Neel temperature TN = 120 K. EMR evidences that Ru-doping modifies both paramagnetic and antiferromagnetic states, and creates an inhomogeneous phase separated ferro- and antiferromagnetic ground states at x > 0.06.

AB - X-band EMR measurements of polycrystalline CaMn1-xRu xO3 (x = 0÷-0.40) samples were done at 120≤T≤400 K aiming to study the effect of Ru-induced magnetic ordering. High-temperature EMR spectra of pristine CaMnO3 show a Lorentzian-like line with ΔHpp ∼ 160 mT and g = 1.995±0.005, whose intensity diminishes, zeroing at Neel temperature TN = 120 K. EMR evidences that Ru-doping modifies both paramagnetic and antiferromagnetic states, and creates an inhomogeneous phase separated ferro- and antiferromagnetic ground states at x > 0.06.

KW - Doped manganites

KW - Ferromagnetic and electron paramagnetic resonance

KW - Phase separation

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