Magnetic contributions in multiferroic gadolinium modified bismuth ferrite ceramics. (November 2020)

• Record Type: Journal Article
• Authors: Walker, Julian; Mirjanic, Anja; Prah, Uros; Sadl, Matej; Condurache, Oana Andreea; Bencan, Andreja; Rojac, Tadej; Grigoras, Marian; Ursic, Hana
• Is Part Of: Scripta materialia. Number 188(2020)
• Page Start: 233
• Page End: 237
• Publication Date: 2020-11
• Subjects: Multiferroics -- Ceramics -- rare earth modified BiFeO3 -- Secondary phases; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.07.045
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Bi0.88 Gd0.12 FeO3 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. Graphical abstract: Image, graphical abstract