Spin-wave resonance in the La0.7Mn1.3O3− film

Dyakonov, V.; Prohorov, A.; Шаповалов, В. А.; Khartsev, Sergiy; Krivoruchko, V. N.; Mihailov, V.; Pashchenko, V. A.; Zubov, E.; Aleshkevych, P.; Dyakonov, K.; Piechota, S.; Szymczak, H.

doi:10.1016/s0375-9601(00)00178-x

Cited by 11 publications

(10 citation statements)

References 15 publications

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“…(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: 61%

“…The very fact that we observe sharp and reproducible resonances proves that the film is highly uniform. Another indication of the high quality of the film is the narrow peak-to-peak linewidth (16 Oe at ambient temperature) and low coercive field (11)(12)(13)(14)(15)(16) Oe at 295 K).…”

Section: Methodsmentioning

confidence: 99%

“…[14]), and La 0.7 Mn 1.3 O 3 (Refs. [15,16,17]) thin films. Although spin-wave excitation at microwave frequencies was observed in La 0.75 Sr 0.11 Ca 0.14 MnO 3 (Ref.…”

Section: Introductionmentioning

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: Linewidthmentioning

confidence: 61%

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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“…The SWR in manganites was observed, for the first time, by Lofland et al [39] was used to excite spin waves successfully [41][42][43]. The results, unpublished thus far, for these films will be described here in details.…”

Section: Microwave Techniquementioning

confidence: 67%

“…Thus far, there are only few experimental works where the spin wave resonance was observed in manganites [39][40][41][42][43]. The SWR in manganites was observed, for the first time, by Lofland et al [39] was used to excite spin waves successfully [41][42][43].…”

Section: Microwave Techniquementioning

confidence: 99%

Magnon Excitations in Manganites

2004

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A review of experimental studies of magnon excitations in manganites is presented. Two kinds of techniques: the inelastic neutron scattering (in bulk materials) and the microwave resonance (in thin films) are considered. Experimental studies of spin dynamics by inelastic neutron scattering in metallic ferromagnetic manganites have shown that at low temperature for small wave vectors k → 0 the dispersion relation has a quadratic shape similar to that observed in Heisenberg ferromagnets. However, the above technique although very informative can be used only for sufficiently large samples of bulk materials. A complementary microwave resonance technique allows studying not only bulk properties, but also surface properties. There are two main theoretical approaches used to interpret the spin wave resonance spectra: the volume inhomogeneity and the surface inhomogeneity models. The last one introduced by Puszkarski has allowed for interpretation of the observed surface magnon excitations in thin films.

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Bulk and surface spin excitations in thin films of manganites

Aleshkevych

Баран

Dyakonov

et al. 2006

Physica Status Solidi (a)

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A review of experimental studies of magnon excitations in manganites is presented. A microwave resonance technique, in particular a spin‐wave resonance (SWR) technique, is shown to allow the study of not only bulk properties but also surface properties of manganite films. There are two main theoretical approaches used to interpret the SWR spectra: the volume inhomogeneity and the surface inhomogeneity models. The latter, introduced by Puszkarski, allows the interpretation of the observed surface magnon excitations in thin films. It is found that SWR spectra show evidence of manganites, besides bulk spin‐wave modes, and also of surface spin‐waves. This observation is used to determine the surface magnetic anisotropy. The effect of surface anisotropy on the spin‐wave excitation conditions in epitaxial La0.7Mn1.3O3–δ films is investigated in detail. SWR data give indirect evidence of periodic charge‐ordered stripe forma‐tion. A strong effect of thermal annealing on stripe structure is observed and discussed. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Spin-wave resonance in the La0.7Mn1.3O3− film

Cited by 11 publications

References 15 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

Magnon Excitations in Manganites

Bulk and surface spin excitations in thin films of manganites

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