title: Synthesis, microstructure, and magnetic properties of monosized MnxZnyFe3 - x - yO4 ferrite nanocrystals.
abstract: We report the synthesis and characterization of ferrite nanocrystals which exhibit high crystallinity and narrow size distributions. The three types of samples including Zn ferrite, Mn ferrite, and Mn-Zn ferrite were prepared via a non-aqueous nanoemulsion method. The structural, chemical, and magnetic properties of the nanocrystals are analyzed by transmission electron microscopy, X-ray diffraction, X-ray fluorescence, and physical property measurement system. The characterization indicates that the three types of ferrite nanocrystals were successfully produced, which show well-behaved magnetic properties, ferrimagnetism at 5 K and superparamagnetism at 300 K, respectively. In addition, the magnetization value of the ferrites increases with the increasing concentration of Mn.
authors.forename: Hayoung
authors.initials: H
authors.lastname: Yoon
authors.forename: Ji Sung
authors.initials: JS
authors.lastname: Lee
authors.forename: Ji Hyun
authors.initials: JH
authors.lastname: Min
authors.forename: Junhua
authors.initials: J
authors.lastname: Wu
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea. ykim97@korea.ac.kr.
authors.forename: Young Keun
authors.initials: YK
authors.lastname: Kim