Crystal growth mechanisms of mixed oxide nanoparticles

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K04608
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nanomaterials chemistry
• Research Institution: Nara Women's University
• Principal Investigator: HARADA MASAFUMI 奈良女子大学, 生活環境科学系, 准教授 (90314525)
• Project Period (FY): 2015-10-21 – 2018-03-31
• Keywords: ナノ粒子 / マイクロ波合成 / 複合酸化物ナノ粒子 / 混合フェライト / 磁化曲線 / 結晶成長 / Ｘ線吸収微細構造 / 構造解析

Outline of Final Research Achievements

Spinel ferrites are a class of compounds of general formula MFe2O4 (M = Mn, Co, Ni, Cu, Zn), which are of great interest for their remarkable magnetic properties. Spinel ferrite nanoparticles have been synthesized by microwave irradiation, and their structural and magnetic properties have been investigated by using XRD, XPS, HRTEM, EELS, EXAFS, and SQUID measurements. Furthermore, since the particular properties of ferrite nanoparticles are strictly related to the distribution of cations between octahedral and tetrahedral sites in the spinel structure, EXAFS measurements have been used to determine quantitatively the distribution of cations in the nanoparticle.

Free Research Field

コロイド化学