Magnetic Domain Studies of Fine Particle Behavior, II: PSD Particles at High Resolution

细颗粒行为的磁域研究，II：高分辨率 PSD 颗粒

• 批准号: 8708544
• 负责人: Susan Halgedahl
• 金额: --
• 依托单位: Columbia University Lamont Doherty Earth Observatory
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-10-01 至 1991-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8708544&HistoricalAwards=false
• 关键词: Magnetic; Domain; Studies; Fine; Particle

The objective of the present work is to observe magnetic domain patterns on fine particles of titanomagnetite and mag- netite with two high resolution techniques, and to devise better methods for obtaining domain patterns at high temperatures which are beyond the reach of conventional methods. It will ultunately be possible to continuously image domain structure from room temperature up to the vincinity of the Curie point. Such work provided the basic physical underpinnings of paleomagnetism.

本工作的目的是用两种高分辨技术观测钛磁铁矿和磁铁矿细粒上的磁畴图案，并设计出在常规方法无法达到的高温下获得磁畴图案的更好方法。这将最终有可能从室温到居里点附近连续成像畴结构。这些工作为古地磁学提供了基本的物理基础。