Probing La(0.7)Sr(0.3)MnO3 multilayers via spin wave resonances
R. Magaraggia, M. Hambe, M. Kostylev, V. Nagarajan, R. L. Stamps
TL;DR
This study investigates the interface properties of La(0.7)Sr(0.3)MnO3 multilayers using spin wave resonances, revealing effects of adjacent layers on surface pinning and magnetic anisotropies.
Contribution
It introduces a novel application of spin wave resonances to analyze interface effects in La(0.7)Sr(0.3)MnO3 heterostructures with different oxide layers.
Findings
Out-of-plane surface pinning induced by BiFeO3 and PbZr20Ti80O3 layers.
New limits on the exchange constant D for La(0.7)Sr(0.3)MnO3.
Confirmation of uniaxial and biaxial anisotropies from SrTiO3 substrate.
Abstract
La(0.7)Sr(0.3)MnO3/BiFeO3 and La(0.7)Sr(0.3)MnO3/PbZr20Ti80O3 epitaxial heterostructures have been grown on SrTiO3 substrates. Spin wave resonances are used to study interface properties of the ferromagnetic La(0.7)Sr(0.3)MnO3. We find that the addition of the BiFeO3 or PbZr20Ti80O3 causes out-of-plane surface pinning of the La(0.7)Sr(0.3)MnO3. We are able to place new limits on the exchange constant D of La(0.7)Sr(0.3)MnO3 grown on these substrates and confirm the presence of uniaxial and biaxial anisotropies caused by the SrTiO3 substrate.
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