红条毛肤石鳖齿舌主侧齿中的纳米磁铁矿Fe_3O_4  

Nanometer Magnetite Fe_3O_4 in the Major Lateral Radula Teeth of Chiton Acanthochiton Rubrolinestus

作　　者：钱霞[1] 王明红[1] 阮树仁[1] 盛淑芳[1] 孙桂芳[1] 

机构地区：[1]聊城大学物理科学与信息工程学院山东省光通信科学与技术重点实验室,聊城252059

出　　处：《人工晶体学报》2015年第6期1656-1661,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(11375081)

摘　　要：利用外磁场分离的方法从红条毛肤石鳖齿舌主侧齿中分离出纳米磁铁矿物质,通过采用扫描电子显微镜、高分辨透射电子显微镜、磁力显微镜及SQUID测量仪等研究了这些纳米磁铁矿在牙齿中的分布特点及晶体结构、磁学特性等物理特性。结果表明,这些纳米磁铁矿为长条片状、内部包含若干具有规则晶体结构的纳米小晶粒的磁铁矿Fe3O4,这些纳米磁铁矿晶体具有单磁畴结构,表现出良好的单轴单畴磁学特性,在牙齿中具有规则的分布特点,从而在石鳖齿舌中产生了独特的磁场分布。From the separating method by outer magnetic field the nanometer magnetite existing in the major lateral radula teeth of chiton Acanthochiton Rubrolinestus are extracted. Then by using the scanning electron microscope, the high resolution transmission electron microscopy, magnetic force microscopy and SQUID measurement instrument,the distribution of nanometer magnetite existing in the teeth,some physical characteristics of nanomagnetites including crystal structure,magnetic characteristics of nanomagnetites are studied. The results show that these nanometer magnetites are oblong sheetlike magnetites Fe3O4 with many little crystal grains with regular crystal structure in it,these nanomagnetites have single magnetic domain and show up good magnetic characteristics of single axis and single magnetic domain,they regularly distribute in the teeth,and so form special magnetic field in the radula of chiton.

关 键 词：红条毛肤石鳖 纳米磁铁矿 物理特性 磁场 

分 类 号：Q64[生物学—生物物理学]