Synthesis of multiferroic BiFeO 3 nanoparticles
Synthesis of multiferroic BiFeO 3 nanoparticles
复制标题
多铁性BiFeO 3 纳米粒子的合成
DOI：
10.1088/1742-6596/200/7/072041
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Y. Ichiyanagi
中科院分区：
文献类型：
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作者：
Toshiyuki Mashino;S. Kimura;D. Shigeoka;Tomoyuki Hiroki;H. Katayanagi;Yuki Moro;Y. Ichiyanagi
采用湿化学法合成了平均粒径约为40 nm的BiFeO3纳米粒子。通过控制退火温度和退火时间，得到单相BiFeO3纳米粒子。纳米粒子的磁化曲线的行为是类似的自旋玻璃系统，表明纳米粒子具有反铁磁性。结果表明，超交换相互作用比RKKY相互作用更占主导地位。纳米粒子在低温下的铁磁行为可以用该系统中每个畴中的未补偿自旋来解释。
BiFeO3 nanoparticles with an average diameter of approximately 40 nm were synthesized by a wet chemical method. The annealing temperature and annealing time were controlled to obtain single-phase BiFeO3 nanoparticles. The behavior of magnetization curves of the nanoparticles is similar to that of a spin-glass system suggesting that the nanoparticles have antiferromagnetic properties. It is suggested that superexchange interaction is more dominant than RKKY interaction in this system. The ferromagnetic behavior of the nanoparticles at low temperatures could be explained by the uncompensated spins in each domain in this system.
热处理对磁性 MgFe2O4 纳米颗粒的影响
DOI：
--
发表时间：
2008
期刊：
J. Therm. Anal. Cal. 33635
影响因子：
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作者：
M. Kubota;Y. Kanazawa;K. Nasu;S. Moritake;H. Kawaji;T Atake Y. Ichiyanagi
通讯作者：
T Atake Y. Ichiyanagi