Abstract
Magnetic after-effect (MAE) spectra on differently sintered zinc ferrites, Zn x Fe 3-z-Δ O 4 with 0.1 < x < 0.5 containing orthogonal vacancies (10 -5 < Δ < 10 -3 ) are investigated in the temperature range 4 K < T < 450 K using an LC-oscillator technique. The low-temperature MAE processes due to electron tunnelling (4 K< T < 35 K) and hopping (50 K < T < 125 K) are severely affected and the Verwey transition is completely suppressed for the given range of Zn substitutions. Around 300 K, the vacancy-induced peak III appears, being accompanied by a Zn-induced high-temperature satellite (T ≥ 380 K), known as process II. The vacancy-mediated relaxation model of process III is modified so as to explain the role of substituted Zn 2+ on the observed MAE spectra.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
