Antiphase Domains and Reverse Thermoremanent Magnetism in Ilmenite-Hematite Minerals
Antiphase Domains and Reverse Thermoremanent Magnetism in Ilmenite-Hematite Minerals
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钛铁矿-赤铁矿矿物中的反相磁畴和反向热剩磁
DOI：
10.1126/science.213.4514.1372
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发表时间：
1981
期刊：
影响因子：
56.9
通讯作者：
R. Hargraves
中科院分区：
文献类型：
--
作者：
C. A. Lawson;G. Nord;Eric Dowty;R. Hargraves
通过透射电子显微镜检查的合成钛铁矿-赤铁矿样品首次揭示了存在定义明确的反相域和反相域边界在这个矿物系统。从1300 ℃淬火的样品具有高密度的畴界，而从900 ℃淬火的样品具有低得多的密度。只有高温样品在外加磁场中冷却时才获得反向热释磁。高密度畴界的存在似乎是获得反向热释磁的必要条件。
Examination of synthetic ilmenite-hematite samples by transmission electron microscopy has for the first time revealed the presence of well-defined antiphase domains and antiphase domain boundaries in this mineral system. Samples quenched from 1300�C have a high density of domain boundaries, whereas samples quenched from 900�C have a much lower density. Only the high-temperature samples acquire reverse thermoremanent magnetism when cooled in an applied magnetic field. The presence of a high density of domain boundaries seems to be a necessary condition for the acquisition of reverse thermoremanent magnetism.