Electron holography of magnetic field generated by a magnetic recording head. Goto, T., Jeong, J. S., Xia, W., Akase, Z., Shindo, D., & Hirata, K. Microscopy, 62(3):383–389, June, 2013.
Electron holography of magnetic field generated by a magnetic recording head [link]Paper  doi  abstract   bibtex   
The magnetic field generated by a magnetic recording head is evaluated using electron holography. A magnetic recording head, which is connected to an electric current source, is set on the specimen holder of a transmission electron microscope. Reconstructed phase images of the region around the magnetic pole show the change in the magnetic field distribution corresponding to the electric current applied to the coil of the head. A simulation of the magnetic field, which is conducted using the finite element method, reveals good agreement with the experimental observations.
@article{goto_electron_2013,
	title = {Electron holography of magnetic field generated by a magnetic recording head},
	volume = {62},
	issn = {2050-5698, 2050-5701},
	url = {http://jmicro.oxfordjournals.org/content/62/3/383},
	doi = {10.1093/jmicro/dfs090},
	abstract = {The magnetic field generated by a magnetic recording head is evaluated using electron holography. A magnetic recording head, which is connected to an electric current source, is set on the specimen holder of a transmission electron microscope. Reconstructed phase images of the region around the magnetic pole show the change in the magnetic field distribution corresponding to the electric current applied to the coil of the head. A simulation of the magnetic field, which is conducted using the finite element method, reveals good agreement with the experimental observations.},
	language = {en},
	number = {3},
	urldate = {2013-12-09},
	journal = {Microscopy},
	author = {Goto, Takayuki and Jeong, Jong Seok and Xia, Weixing and Akase, Zentaro and Shindo, Daisuke and Hirata, Kei},
	month = jun,
	year = {2013},
	pmid = {23291267},
	keywords = {Electron holography, Transmission electron microscopy, finite element method, in situ observation, magnetic field, magnetic recording head},
	pages = {383--389},
}

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