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Magnetic Anisotropy in Thin Layers of (Mn,Zn)Fe 2 O 4 on SrTiO 3 (001)
Author(s) -
Denecke Reinhard,
Welke Martin,
Huth Paula,
Gräfe Joachim,
Brachwitz Kerstin,
Lorenz Michael,
Grundmann Marius,
Ziese Michael,
Esquinazi Pablo David,
Goering Eberhard,
Schütz Gisela,
Schindler Karl-Michael,
Chassé Angelika
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201900627
Subject(s) - magnetic circular dichroism , condensed matter physics , magnetization , ferrimagnetism , magnetic moment , magnetic anisotropy , remanence , materials science , squid , nuclear magnetic resonance , physics , spectral line , magnetic field , ecology , quantum mechanics , astronomy , biology
Herein, a ferrimagnetic manganese zinc ferrite (Mn 0.5 Zn 0.5 Fe 2 O 4 ) film with a thickness of 200 nm is prepared without a buffer layer on strontium titanate (001) (SrTiO 3 ) using pulsed laser deposition. Its magnetic properties are investigated using superconducting quantum interference device (SQUID), X‐ray absorption spectroscopy with subsequent X‐ray magnetic circular dichroism (XMCD) and magneto‐optic Kerr effect (MOKE). Hysteresis loops derived from SQUID exhibits bulk‐like properties. This can further be confirmed by bulk‐like XMCD spectra. In remanent magnetization, an in‐plane magnetization with basically no out‐of‐plane component is found. The magnetic moments derived by the sum rule formalism from the XMCD data are in good agreement to the magnetization observed by SQUID and MOKE. XMCD as well as MOKE reveal an in‐plane angular fourfold magnetic anisotropy with the easy direction along [110] for (Mn 0.5 Zn 0.5 )Fe 2 O 4 on SrTiO 3 . The element‐specific magnetic moments from XMCD show a stronger contribution of Fe to the anisotropy than of Mn and distinct contributions of the orbital moments.