Magnetic anisotropy of thin sputtered MgB2 films on MgO substrates in high magnetic fields

Fabretti S, Imort I-M, Kuschel T, Dahm T, Guduru VK, Zeitler U, Thomas A (2014)
AIP Advances 4(3): 037115.

Journal Article | Published | English

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Abstract
We investigated the magnetic anisotropy ratio of thin sputtered polycrystalline MgB2 films on MgO substrates. Using high magnetic field measurements, we estimated an anisotropy ratio of 1.35 for T=0Kwith an upper critical field of 31.74 T in the parallel case and 23.5 T in the perpendicular case. Direct measurements of a magnetic-field sweep at 4.2 K show a linear behavior, confirmed by a linear fit for magnetic fields perpendicular to the film plane. Furthermore, we observed a change of up to 12% of the anisotropy ratio in dependence of the film thickness.
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Fabretti S, Imort I-M, Kuschel T, et al. Magnetic anisotropy of thin sputtered MgB2 films on MgO substrates in high magnetic fields. AIP Advances. 2014;4(3): 037115.
Fabretti, S., Imort, I. - M., Kuschel, T., Dahm, T., Guduru, V. K., Zeitler, U., & Thomas, A. (2014). Magnetic anisotropy of thin sputtered MgB2 films on MgO substrates in high magnetic fields. AIP Advances, 4(3): 037115.
Fabretti, S., Imort, I. - M., Kuschel, T., Dahm, T., Guduru, V. K., Zeitler, U., and Thomas, A. (2014). Magnetic anisotropy of thin sputtered MgB2 films on MgO substrates in high magnetic fields. AIP Advances 4:037115.
Fabretti, S., et al., 2014. Magnetic anisotropy of thin sputtered MgB2 films on MgO substrates in high magnetic fields. AIP Advances, 4(3): 037115.
S. Fabretti, et al., “Magnetic anisotropy of thin sputtered MgB2 films on MgO substrates in high magnetic fields”, AIP Advances, vol. 4, 2014, : 037115.
Fabretti, S., Imort, I.-M., Kuschel, T., Dahm, T., Guduru, V.K., Zeitler, U., Thomas, A.: Magnetic anisotropy of thin sputtered MgB2 films on MgO substrates in high magnetic fields. AIP Advances. 4, : 037115 (2014).
Fabretti, Savio, Imort, Inga-Mareen, Kuschel, Timo, Dahm, Thomas, Guduru, Veerendra K., Zeitler, Uli, and Thomas, Andy. “Magnetic anisotropy of thin sputtered MgB2 films on MgO substrates in high magnetic fields”. AIP Advances 4.3 (2014): 037115.
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