Magnetic contributions in multiferroic gadolinium modified bismuth ferrite ceramics
Walker, Julian; Mirjanic, Anja; Sadl, Uros; Condurache, Oana Andreea; Bencan, Andreja; Rojac, Tadej; Grigoras, Marian; Uršič, Hana
Peer reviewed, Journal article
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Date
2020Metadata
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- Institutt for materialteknologi [2685]
- Publikasjoner fra CRIStin - NTNU [40120]
Original version
Scripta Materialia. 2020, 188, 233-237. https://doi.org/10.1016/j.scriptamat.2020.07.045Abstract
Bi0.88Gd0.12FeO3 multiferroics are of interest for next-generation electronics and are shown with a remnant magnetization 0.2 emu·g−1, coercive field 8 kOe, Curie temperature 370 °C and magnetization of 0.7 emu·g−1 at magnetic fields 30 kOe. Scanning probe microscopy confirmed the intrinsic multiferroicity in the perovskite phase with coexistence of ferroelectric/ferroelastic and ferromagnetic domain structures. Strong magnetic hysteresis was produced by thermal cycling to 1000 °C due to degeneration of the perovskite phase into iron oxide inclusions, highlighting the importance of processing, thermal history and thermodynamic stability for minimizing the amount of parasitic magnetic secondary phases.