Facile synthesis of epsilon iron oxides via spray drying for millimeter-wave absorption

Gi Ryeon Jo; Min Byeol Yun; Yeong Hun Son; Byeongjin Park; Jung-Goo Lee; Young-Guk Kim; Young-Guk Son; Youn-Kyoung Baek

doi:10.1039/d2cc03168j

Facile synthesis of epsilon iron oxides via spray drying for millimeter-wave absorption

Chem Commun (Camb). 2022 Oct 11;58(81):11442-11445. doi: 10.1039/d2cc03168j.

Authors

Gi Ryeon Jo^{1

2}, Min Byeol Yun^{1

2}, Yeong Hun Son^{1

2}, Byeongjin Park³, Jung-Goo Lee¹, Young-Guk Kim¹, Young-Guk Son², Youn-Kyoung Baek¹

Affiliations

¹ Powder Materials Division, Korea Institute of Materials Science, Changwon, 51508, South Korea. ykbaek@kims.re.kr.
² School of Materials Science & Engineering, Pusan National University, Busan, 46241, South Korea. ykson@pusan.ac.kr.
³ Composites Research Division, Korea Institute of Materials Science, Changwon, 51508, South Korea.

PMID: 36148584
DOI: 10.1039/d2cc03168j

Abstract

A simple, scalable spray drying method was developed for high-yield epsilon iron oxide (ε-Fe₂O₃) synthesis. The ε-Fe₂O₃ particle size can be tailored by varying the annealing temperature and molar ratio of Fe/Si, producing a high-purity ε-phase. This strategy also enables ferromagnetic resonance tuning, making it potentially usable in millimeter-wave absorbers.