检索结果-南通市图书馆

The Effect of La on the Physical and Magnetic Properties of NiCuZn Ferrites

材料科学与工程（中英文B版） 2011年第7期1卷 891-894页

作者： Saiduzzaman Md. Abul Hossain A.K.M. Hakim saroaut noor Robiul Islam Md. Al-Mamun Department of Physics Jahangirnagar University Dhaka Bangladesh Materials Science Division Atomic Energy Centre Dhaka Bangladesh Department of Physics KUET Khulna Bangladesh

Lanthanum-substituted NiCuZn ferrites Ni0.26Cu0.16Zn0.58LaxFe2-xO4 were prepared by usual ceramic method. The samples were investigated for their structural properties such as lattice parameter and density as a function of La content. The lattice parameter of the samples increased with the increasing of La which might be attributed to the larger ionic radius of La3+. The density slightly increased with the increasing of La content. The Scanning Electron Microscope (SEM) micrographs of the samples were observed to investigate grain sizes. It was also observed that bulk density was less than X-ray density. The electrical and magnetic properties such as resistivity, initial permeability, Curie temperature as a function of temperature, frequency and La content were also studied. The initial permeability at 100 kilohertz was found to increase at a certain limit and then decrease with the increasing of La content. The magnetic hysteresis loops of the samples were measured at room temperature.

关键词： NiCuZn铁氧体磁学性质扫描电子显微镜物理射线密度镧晶格参数居里温度

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of Sintering Temperature on Structural and Magnetic Properties of Ni0.55Zn0.45Fe2O4Ferrites

引用

Materials Sciences and Applications 2012年第5期3卷 326-331页

作者： Robiul Islam Md Obaidur Rahman M. Abdul Hakim Dilip Kumar Saha Saiduzzaman Saiduzzaman saroaut noor Md Al-Mamun Department of Physics Khulna University of Engineering & Technology Khulna Bangladesh Materials Science Division Atomic Energy Centre Dhaka Bangladesh The Department of Physics Jahangirnagar University Dhaka Bangladesh

The effect of frequency and sintering temperature on initial permeability of Ni0.55Zn0.45Fe2O4 ferrites have been studied by using an impedance analyzer. The samples were prepared by conventional double sintering ceramic technique using oxide nanoparticles of grain size 30 - 50 nm. Single phase spinal structure has been confirmed for the prepared samples by X-ray diffraction. As the sintering temperatures increase from 1160℃ to 1300℃, the permeability gradually increases. The increase of permeability is ascribed to the increase of density and grain size. Grain size is expected to grow with the increase of sintering temperature. Ferrites with large average grain size posses higher initial permeability. The Curie temperatures determined from temperature dependence of permeability of the samples sintered at different temperatures are found to be Tc = (321 ± 1)℃ and independent of sintering temperature. At Ts = 1300℃, Tc is found to increase substantially which can be explained by the fact that Zn has evaporated from the surface layer.

关键词： Nanoparticle Sintering Temperature Curie Temperature Microstructure Grain Size

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：