Artificial manipulation of magnetic nanoparticles by using anisotropic strain method

利用各向异性应变法人工操控磁性纳米颗粒

• 批准号: 23550158
• 负责人: MITO Masaki
• 金额: $ 3.41万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23550158/
• 关键词: 磁性ナノ粒子; コロイド・超微粒子; 異方的ひずみ; 超常磁性; 保磁場; 静水圧力実験; 国際情報交換(ポルトガル）; 圧力効果; ひずみ効果; 国際研究者交流(ポルトガル）; 高圧力実験; 構造解析; 磁気測定

The magnetic properties of nanoparticles depend on their size. The studies of the size effects have been conducted mainly via chemical approaches, which yields discontinuous change in structural parameters. We have performed the hydrostatic pressure experiment for prototypes of magnetic nanoparticles by pursuing the magnetic blocking temperature, coercive field, magnetic moment per one particle, and structural parameters, in order to conduct the systematic study from the physical viewpoint. However, the particle shape has never been considered as a structural factor to explain the magnetic properties. Thus, in order to make the influence of particle shape prominent, we have developed the physical method of inducing anisotropic strain to nanoparticles, and elucidated how the change in the particle shape as well as those in structural parameters of the unit size level give important influence to the magnetic properties.

纳米颗粒的磁性取决于它们的尺寸。尺寸效应的研究主要通过化学方法进行，这会导致结构参数的不连续变化。 我们对磁性纳米粒子的原型进行了静水压实验，追求磁阻温度、矫顽场、单个粒子的磁矩和结构参数，从物理角度进行系统研究。然而，颗粒形状从未被视为解释磁性的结构因素。因此，为了突出颗粒形状的影响，我们开发了对纳米颗粒诱导各向异性应变的物理方法，并阐明了颗粒形状以及单位尺寸级别的结构参数的变化如何产生重要影响到磁性。

项目成果

Effective Disappearance of the Meissner Signal in the Cuprate Superconductor YBa2Cu4O8 under Uniaxial Strain

单轴应变下铜酸盐超导体YBa2Cu4O8中迈斯纳信号的有效消失

• DOI: 10.7566/jpsj.83.023705
• 发表时间: 2014
• 期刊: Journal of the Physical Society of Japan
• 影响因子: 1.7
• 作者: Masaki Mito;Takumi Imakyurei;Hiroyuki Deguchi;Kaname Matsumoto;Hiroshi Hara;Toshinori Ozaki;Hiroyuki Takeya;and Yoshihiko Takano
• 通讯作者: and Yoshihiko Takano

Uniaxial strain effects on spinel ferrite nanoparticles containing Nd and B elements

含 Nd 和 B 元素的尖晶石铁氧体纳米颗粒的单轴应变效应

• 发表时间: 2012
• 作者: M. Mito;S. Saisho;H. Deguchi T. Iwamoto;A. Takahara
• 通讯作者: A. Takahara

銅酸化物超伝導YBa_2Cu_4O_<8 >の一軸性圧縮効果

铜酸盐超导体YBa_2Cu_4O_<8>的单轴压缩效应

• 发表时间: 2012
• 作者: 松田 孝司;上田 将史;白旗 崇;御崎 洋二;今給黎匠,美藤正樹,出口博之,松本要,田尻恭之,原裕,竹屋浩幸,高野義彦
• 通讯作者: 今給黎匠,美藤正樹,出口博之,松本要,田尻恭之,原裕,竹屋浩幸,高野義彦

Pressure effects in hollow and solid iron oxide nanoparticles

空心和实心氧化铁纳米粒子的压力效应

• DOI: 10.1016/j.jmmm.2013.01.028
• 发表时间: 2013
• 期刊: Journal of Magnetism and Magnetic Materials
• 影响因子: 2.7
• 作者: N. J. O. Silva;S. Saisho;M. Mito;A. Millan;F. Palacio;A. Cabot;Oscar Iglesias and A. Labarta
• 通讯作者: Oscar Iglesias and A. Labarta

反強磁性ＮｉＯナノ粒子のサイズ効果・粒子形状効果

反铁磁NiO纳米颗粒的尺寸效应和颗粒形状效应

• 发表时间: 2011
• 作者: 才所誠也;今給黎匠;美藤正樹;田尻恭之;出口博之;高木精志;香野淳
• 通讯作者: 香野淳