共查询到20条相似文献，搜索用时 15 毫秒
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V. S. Malyshevsky 《辐射效应与固体损伤》2013,168(1-2):153-155
Prospects for Fusion Power, Edited by S. 0. Dean, Pergamon Press, $29.30. The Detection of Fissionable Materials by Nondestructive Means by R. Sher (Stanford University) and S. Untermyer II (National Nuclear Corporation), pp. 298. Price : $US49.00. 相似文献
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Julian Barbour 《Contemporary Physics》2013,54(1):65-74
The first part of the article describes the calculation of magnetostatic energies (which are necessary to predict the critical sizes of crystals below which domains cease to form) and of the domain spacing or number of domains per crystal. Methods suitable for periodic ‘magnetic charge’ distributions in semi-infinite crystals and for finite distributions are described, and both planar and cylindrical domain walls are included. The reasons for the special interest in small crystals is discussed. The second part presents results on thin crystals of barium ferrite with both extensive and discrete structures; orthoferrite crystals with extensive walls and containing one or two cylindrical domains; and small crystals of gadolinium iron garnet near to the compensation temperature, in which the number of domains is a function of temperature. These results are discussed in the light of the theories outlined. 相似文献
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