Visualisation of high temperature magnetisation states in magnetite grains using off-axis electron holography

Visualisation of high temperature magnetisation states in magnetite grains using off-axis electron holography
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使用离轴电子全息术可视化磁铁矿晶粒中的高温磁化状态

DOI:
10.1088/1742-6596/644/1/012027
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发表时间:
2015
期刊:
Conference Series
影响因子:
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通讯作者:
Almeida T
Almeida T
中科院分区:
--
文献类型:
--
作者:
Almeida T

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已经使用透射电子显微镜和X射线衍射法证实了通过玻璃陶瓷方法生产包含Fe 3 O 4 颗粒(~50nm至~500nm)的合成玄武岩。离轴电子全息术与原位加热相结合,可以可视化饱和剩磁结构中存在的不均匀涡旋状态,以及它们接近居里温度的变化;通过批量热磁测量单独确定。
The production of a synthetic basalt comprising Fe 3 O 4 grains (∼ 50 nm to∼ 500 nm), via a glass ceramic method, has been confirmed using transmission electron microscopy and X-ray diffractometry. Off-axis electron holography combined with in situ heating allowed for the visualisation of non-uniform vortex states present in saturation remanent structures, and their variation approaching the Curie temperature; determined separately by bulk thermomagnetic measurements.