摘要
与顺磁样品相比铁磁样品的磁共振信号不仅是强得多 ,铁磁样品的许多特点都会在铁磁共振 (FMR)谱中反映出来 .诸如 ,起始磁化过程的FMR谱线与有剩余磁化强度Mr 的FMR谱是不同的 ,起始磁化过程中的巴克豪森跳跃也会在FMR谱中反映出来 .样品的磁晶各向异性、形状各向异性 ,铁磁 高温顺磁的磁性相变等等都能用FMR方法加以研究 .
Comparing to a paramagnetic sample, the signal of magnetic resonance of a ferromagnetic sample not only is much stronger, but also reflects many characteristics of ferromagnetic resonance (FMR) spectra. Such as, the FMR spectra are different between virgin magnetization and magnetization with remanence M\-r. Barkhausen jumps is characterized by FMR spectrum in virgin magnetization. The FMR can also be used to study anisotropy of magnetocrystal, shape anisotropy, and magnetic phase transition of ferromagnetism high temperature paramagnetism, etc.. \;Key words\ Ferromagnetic resonance, Virgin magnetization, Barkhausen jumps, Magnetic anisotropy, Magnetic phase transitionorrelation, for example, basin evolution, tectonic process, outline of palaeogeography, biostratigraphy and so on. In the use of sequence stratigraphical theory for correlation, detailed and objective studies of biostratigraphy and tectonic process in or between the basins are the prerequisites for the correlation; setting up sequence stratigraphical framework and estimating shoreline onlap cycles in harmony with sedimentary features, was basic to the correlation; and the sequence boundary and condensed section are the key marks for the correlation. Besides, the widespread geological events should be given attention too.
出处
《波谱学杂志》
CAS
CSCD
北大核心
2000年第1期83-87,共5页
Chinese Journal of Magnetic Resonance
基金
国家高技术研究发展计划强辐射实验室科学基金!(批准号 :970 4 )资助项目
关键词
铁磁共振
起始磁化
巴克豪森跳跃
磁各向异性
correlation, sequence stratigraphy, sequence, shoreline onlap, Devonian, Yunnan.
