Structure and magnetic properties of ternary Tb-Fe-B nanoparticles and nanoflakes

Structure and magnetic properties of ternary Tb-Fe-B nanoparticles and nanoflakes
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三元Tb-Fe-B纳米粒子和纳米片的结构和磁性能

DOI:
10.1063/1.3653256
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发表时间:
2011-10
影响因子:
4
通讯作者:
岳明
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中科院分区:
物理与天体物理2区
文献类型:
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作者:
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研究了助表面活性剂高能球磨法制备的铽铁硼三元纳米颗粒和纳米薄片的结构和磁性能。当纳米颗粒的平均粒径为31.4 nm时,其室温矫顽力可达10.6 Oe,但当粒径降至8.2 nm时,其室温矫顽力大幅降低至400 Oe。纳米片的厚度在50 ~ 80 nm之间,长度约为1.1 μm,同时具有22.1 kOe的高矫顽力和较强的磁各向异性,表明纳米片具有优异的永磁性能。
The structure and magnetic properties were studied for the ternary Tb-Fe-B nanoparticles and nanoflakes prepared by surfactant-aid high energy ball milling and subsequent size-selection. For the nanoparticles, significant room-temperature coercivity up to 10.6 kOe was achieved with the average particle size of 31.4 nm, but it decreases substantially to 400 Oe as the size is down to 8.2 nm. For the nanoflakes, the thickness is in the range of 50-80 nm while the length is about 1.1 μm, and high coercivity of 22.1 kOe and strong magnetic anisotropy were obtained simultaneously, indicating that the nanoflakes possess excellent permanent magnetic properties.
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发表时间: 2011-01-01
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