Microwave absorption in a thin<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>0.7</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>0.3</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">MnO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mro

Lyfar, D. L.; Ryabchenko, S. M.; Krivoruchko, V. N.; Khartsev, Sergiy; Grishin, Alexander M.

doi:10.1103/physrevb.69.100409

Cited by 31 publications

(29 citation statements)

References 12 publications

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“…The asymmetry arises from the coupling to the dielectric resonances in the STO substrate and was observed in other studies as well. [20,23] The angular dependence of the resonant fields (not shown here) follows Eq. (5), hence we attribute these peaks to the spin-wave resonances.…”

Section: Methodsmentioning

confidence: 99%

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Spin-wave resonances inLa0.7Sr0.3MnO3films: Measurement of spin-wave stiffness and anisotropy field

et al. 2007

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We studied magnetic field dependent microwave absorption in epitaxial La 0.7 Sr 0.3 MnO 3 films using an X-band Bruker ESR spectrometer. By analyzing angular and temperature dependence of the ferromagnetic and spin-wave resonances we determine spin-wave stiffness and anisotropy field.The spin-wave stiffness as found from the spectrum of the standing spin-wave resonances in thin films is in fair agreement with the results of inelastic neutron scattering studies on a single crystal of the same composition [Vasiliu-Doloc et al., J. Appl. Phys. 83, 7343 (1998)].

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Section: Methodsmentioning

confidence: 99%

“…(9) [14,15,16,17,18,19,20] and present work). The x ∼ 0.3 composition corresponds to highest conductivity and is the most distant from phase boundaries, [50] in other words, the phase separation effects should be least insignificant here.…”

Section: Linewidthmentioning

confidence: 99%

Spin-wave resonances inLa0.7Sr0.3MnO3films: Measurement of spin-wave stiffness and anisotropy field

et al. 2007

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“…Conventionally, the EPR spectrometry is used for investigation of microwave characteristics of thin films of FM manganites [7]. In this paper the microwave surface impedance of the conductive FM films deposited on the dielectric, metal, and the HTS materials were investigated through the modeling.…”

Section: Introductionmentioning

confidence: 99%

Modeling of the Surface Impedance of Conductive Ferromagnetic Films on Different Substrates

Nurgaliev

2008

Acta Phys. Pol. A

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The microwave surface impedance of conductive ferromagnetic films hypothetically deposited on dielectric, metal and superconducting substrates was numerically investigated for the case when the film is tangentially magnetized. It was shown that the surface impedance is governed by the ferromagnetic film conductivity if the film is thin enough. Peculiarities of the impedance caused by the ferromagnetic resonance arise more clearly in thicker ferromagnetic films or in films deposited on substrates of higher permittivity or on metal and superconducting substrates. A ferromagnetic film strongly affects the surface impedance of superconducting material, especially, in the ferromagnetic resonance frequency region.

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“…Microwave measurements in manganites may give information about the module, orientation of the magnetization vector and about the magnetic anisotropy of the manganite materials [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Electrical characteristics of HTS/manganite double layers

et al. 2007

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Abstract:Superconductor/ferromagnetic (SC/FM) Y 1 Ba 2 Cu 3 O 7−δ /La 0.7 Sr 0.3 MnO 3 (YBCO/LSMO) double layers were prepared on LaAlO 3 substrates by magnetron sputtering and their electrical and microwave parameters were investigated at 77 K. In the theoretical plan, simple formulas for estimation of the sensitivity of the SC surface impedance to the concentration changes of normal charge carriers were proposed and the surface resistance R S peculiarities of both SC and FM surfaces were described. Thinner YBCO/LSMO structure was characterized by lower SC parameters and higher surface resistance R S at ∼ 4 GHz. The difference of R S of sample SC surfaces was interpreted as due to a difference between the normal charge carrier densities in these samples. R S of the FM surface was higher than that of the SC surface due to the microwave losses of the magnetic subsystem. A peak of the microwave losses, observed in the thicker double layer, was assumed to be caused by uniform FMR in the LSMO film.

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Microwave absorption in a thinLa0.7Sr0.3MnO3

Cited by 31 publications

References 12 publications

Spin-wave resonances inLa0.7Sr0.3MnO3films: Measurement of spin-wave stiffness and anisotropy field

Spin-wave resonances inLa0.7Sr0.3MnO3films: Measurement of spin-wave stiffness and anisotropy field

Modeling of the Surface Impedance of Conductive Ferromagnetic Films on Different Substrates

Electrical characteristics of HTS/manganite double layers

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