Shigeharu Hinotani

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Magnetic domain structures of doubly oriented and non-oriented electrical steel sheets, the former of which has two perpendicular magnetic easy axes in the sheet plane, have been observed by Lorentz microscopy and electron holography. In the demagnetized state, the doubly oriented electrical steel sheet shows straight lines of domain walls with homogeneous(More)
Application of fine-grained doubly oriented electrical steel sheets that have a strong {100}<001> texture to synchronous interior permanent magnet motors has been investigated. The alteration in stator core material from high grade nonoriented electrical steel sheets to the doubly oriented material with a simple change in stator design was found to lead to(More)
The magnetic core materials for motors have been mostly limited to non-oriented electrical steels of which crystallographic texture is almost random, although there is a possibility to greatly improve performance of motors by the use of steels with textures such as {100}<001>.The purpose of this research is to investigate how the performance of motors can(More)
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