Combining Soft Chemistry and Spark Plasma Sintering to Produce Highly Dense and Finely Grained Soft Ferrimagnetic Y3Fe5O12 (YIG) Ceramics
作者： Thomas Gaudisson , Ulises Acevedo , Sophie Nowak , Nader Yaacoub , Jean-Marc Greneche
DOI: 10.1111/JACE.12452
关键词:
摘要: We report the synthesis of yttrium iron garnet (YIG) combining soft chemistry route, namely polyol process, and spark plasma sintering (SPS) technique. The process produced an intermediary amorphous phase containing both cations in desired ratio. They were annealed at 400°C air to decompose organic content reaction (polyol acetate). To achieve phase, polyol-obtained precursor was subjected reactive SPS treatment a temperature 750°C, far below typical temperatures (1350°C) used classic solid-state process. In 15 min pure high-density Y3Fe5O12 ceramic, with about 100 nm sized crystalline grains, obtained. as well characterization initial obtained YIG by X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, 57Fe Mossbauer spectrometry, magnetization measurements.
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