Magnetism and Structure Evolution in Ni-Zn Ferrites Thin Films - CEMS Study
T. Szumiataa, M. Gzik-Szumiata a, K. Brzózka a, B. Górka a, M. Gawroński a, A. Javed b, K. Farman b and T. Fatima b
aDepartment of Physics, Faculty of Mechanical Engineering, University of Technology and Humanities in Radom, J. Krasickiego 54, 26-600 Radom, Poland
bDepartment of Physics, University of the Punjab, Quaid-i-Azam Campus, Lahore-54590, Pakistan
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In this work, a 57Fe conversion: electron Mössbauer spectrometry and X-ray diffraction have been utilized in order to investigate the structural and magnetic order in 500 nm thick Ni-Zn ferrite films deposited on Si(100) substrate by laser ablation. Considering the contributions of the conversion electron Mössbauer subspectra corresponding to the tetrahedral (A) and octahedral (B) sites, the spinel inversion parameter in [ZnxFe1-x]A[Ni1-xFe1+x]BO4 films has been estimated. The hyperfine field (Bhf) values in the investigated Ni-Zn ferrites thin films are about 5-8% smaller than those of bulk ferrites, which could be a sign of thermal magnetic relaxations due to the size effects. The distribution of hyperfine magnetic field directions was found to be affected by perpendicular anisotropy.

DOI: 10.12693/APhysPolA.131.836
PACS numbers: 76.80.+y, 81.15.Fg, 81.05.Je