Ru doping of the Mn site in La0.4Ca0.6MnO3 perovskite: Electron magnetic resonance study of electronic and magnetic ordering

Alexander Shames; Evgeny Rosenberg; Mark Auslender; Gad Gorodetsky; A. Yakubovsky; S. Gudenko; C. Martin; A. Maignan

doi:10.1063/1.2151798

Ru doping of the Mn site in La_0.4Ca_0.6MnO₃ perovskite: Electron magnetic resonance study of electronic and magnetic ordering

Alexander Shames, Evgeny Rosenberg, Mark Auslender, Gad Gorodetsky, A. Yakubovsky, S. Gudenko, C. Martin, A. Maignan

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

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Abstract

X -band (μ=9.4 GHz) electron magnetic resonance (EMR) measurements were carried out in polycrystalline La0.4 Ca0.6 Mn1-x Rux O3 (0≤x≤0.16) samples at 100 K≤T≤550 K, aiming to study magnetic/electronic ordering induced by Ru doping. EMR indicates that such doping modifies even the paramagnetic state of La0.4 Ca0.6 Mn1-x Rux O3 series: the linewidth of resonance signal increases with doping. The initial charge-ordered (CO) antiferromagnetic (AFM) ground state is also drastically modified by doping. At Ru contents x≥0.04, the ferromagnetic (FM) EMR signal is observed below former TCO. It evidences that the CO transition transforms into the FM one. The magnetic ground state of La0.4 Ca0.6 Mn1-x Rux O3 remains definitely inhomogeneous due to the coexistence of FM and AFM phases up to, at least, x=0.10. The data obtained are compared with known ones for Ca Mn1-x Rux O3 system and discussed in the framework of the energy diagram model for Ru-doped manganites.

Original language	English
Article number	08Q304
Journal	Journal of Applied Physics
Volume	99
Issue number	8
DOIs	https://doi.org/10.1063/1.2151798
State	Published - 25 May 2006
Externally published	Yes

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General Physics and Astronomy

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title = "Ru doping of the Mn site in La0.4Ca0.6MnO3 perovskite: Electron magnetic resonance study of electronic and magnetic ordering",

abstract = "X -band (μ=9.4 GHz) electron magnetic resonance (EMR) measurements were carried out in polycrystalline La0.4 Ca0.6 Mn1-x Rux O3 (0≤x≤0.16) samples at 100 K≤T≤550 K, aiming to study magnetic/electronic ordering induced by Ru doping. EMR indicates that such doping modifies even the paramagnetic state of La0.4 Ca0.6 Mn1-x Rux O3 series: the linewidth of resonance signal increases with doping. The initial charge-ordered (CO) antiferromagnetic (AFM) ground state is also drastically modified by doping. At Ru contents x≥0.04, the ferromagnetic (FM) EMR signal is observed below former TCO. It evidences that the CO transition transforms into the FM one. The magnetic ground state of La0.4 Ca0.6 Mn1-x Rux O3 remains definitely inhomogeneous due to the coexistence of FM and AFM phases up to, at least, x=0.10. The data obtained are compared with known ones for Ca Mn1-x Rux O3 system and discussed in the framework of the energy diagram model for Ru-doped manganites.",

author = "Alexander Shames and Evgeny Rosenberg and Mark Auslender and Gad Gorodetsky and A. Yakubovsky and S. Gudenko and C. Martin and A. Maignan",

year = "2006",

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T1 - Ru doping of the Mn site in La0.4Ca0.6MnO3 perovskite

T2 - Electron magnetic resonance study of electronic and magnetic ordering

AU - Shames, Alexander

AU - Rosenberg, Evgeny

AU - Auslender, Mark

AU - Gorodetsky, Gad

AU - Yakubovsky, A.

AU - Gudenko, S.

AU - Martin, C.

AU - Maignan, A.

PY - 2006/5/25

Y1 - 2006/5/25

N2 - X -band (μ=9.4 GHz) electron magnetic resonance (EMR) measurements were carried out in polycrystalline La0.4 Ca0.6 Mn1-x Rux O3 (0≤x≤0.16) samples at 100 K≤T≤550 K, aiming to study magnetic/electronic ordering induced by Ru doping. EMR indicates that such doping modifies even the paramagnetic state of La0.4 Ca0.6 Mn1-x Rux O3 series: the linewidth of resonance signal increases with doping. The initial charge-ordered (CO) antiferromagnetic (AFM) ground state is also drastically modified by doping. At Ru contents x≥0.04, the ferromagnetic (FM) EMR signal is observed below former TCO. It evidences that the CO transition transforms into the FM one. The magnetic ground state of La0.4 Ca0.6 Mn1-x Rux O3 remains definitely inhomogeneous due to the coexistence of FM and AFM phases up to, at least, x=0.10. The data obtained are compared with known ones for Ca Mn1-x Rux O3 system and discussed in the framework of the energy diagram model for Ru-doped manganites.

AB - X -band (μ=9.4 GHz) electron magnetic resonance (EMR) measurements were carried out in polycrystalline La0.4 Ca0.6 Mn1-x Rux O3 (0≤x≤0.16) samples at 100 K≤T≤550 K, aiming to study magnetic/electronic ordering induced by Ru doping. EMR indicates that such doping modifies even the paramagnetic state of La0.4 Ca0.6 Mn1-x Rux O3 series: the linewidth of resonance signal increases with doping. The initial charge-ordered (CO) antiferromagnetic (AFM) ground state is also drastically modified by doping. At Ru contents x≥0.04, the ferromagnetic (FM) EMR signal is observed below former TCO. It evidences that the CO transition transforms into the FM one. The magnetic ground state of La0.4 Ca0.6 Mn1-x Rux O3 remains definitely inhomogeneous due to the coexistence of FM and AFM phases up to, at least, x=0.10. The data obtained are compared with known ones for Ca Mn1-x Rux O3 system and discussed in the framework of the energy diagram model for Ru-doped manganites.

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Ru doping of the Mn site in La_0.4Ca_0.6MnO₃ perovskite: Electron magnetic resonance study of electronic and magnetic ordering

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