1328 Maltiferoics sensor used as magnetic sensor is compounded piezo-electric and magnetic material

2008 ◽  
Vol 2008.6 (0) ◽  
pp. 393-394
Author(s):  
Yoshiyuki HAYASHI ◽  
Teiko OKAZAKI ◽  
Yasubumi FURUYA ◽  
Nobuo IMAIZUMI ◽  
Chihiro SAITO
2019 ◽  
Vol 139 (11) ◽  
pp. 383-384
Author(s):  
Naoki Okada ◽  
Koudai Suzuki ◽  
Takashi Mineta

Author(s):  
K. Shi rota ◽  
A. Yonezawa ◽  
K. Shibatomi ◽  
T. Yanaka

As is well known, it is not so easy to operate a conventional transmission electron microscope for observation of magnetic materials. The reason is that the instrument requires re-alignment of the axis and re-correction of astigmatism after each specimen shift, as the lens field is greatly disturbed by the specimen. With a conventional electron microscope, furthermore, it is impossible to observe magnetic domains, because the specimen is magnetized to single orientation by the lens field. The above mentioned facts are due to the specimen usually being in the lens field. Thus, special techniques or systems are usually required for magnetic material observation (especially magnetic domain observation), for example, the technique to switch off the objective lens current and Lorentz microscopy. But these cannot give high image quality and wide magnification range, and furthermore Lorentz microscopy is very complicated.


Author(s):  
J.A. Eades ◽  
A. van Dun

The measurement of magnification in the electron microscope is always troublesome especially when a goniometer stage is in use, since there can be wide variations from calibrated values. One elegant method (L.M.Brown, private communication) of avoiding the difficulties of standard methods would be to fit a device which displaces the specimen a small but known distance and recording the displacement by a double exposure. Such a device would obviate the need for changing the specimen and guarantee that the magnification was measured under precisely the conditions used.Such a small displacement could be produced by any suitable transducer mounted in one of the specimen translation mechanisms. In the present case a piezoelectric crystal was used. Modern synthetic piezo electric ceramics readily give reproducible displacements in the right range for quite modest voltages (for example: Joyce and Wilson, 1969).


2017 ◽  
Vol 137 (8) ◽  
pp. 481-486
Author(s):  
Junichi Hayasaka ◽  
Kiwamu Shirakawa ◽  
Nobukiyo Kobayashi ◽  
Kenichi Arai ◽  
Nobuaki Otake ◽  
...  

2019 ◽  
Vol 139 (2) ◽  
pp. 84-87
Author(s):  
Kentaro MORI ◽  
Masahiko WATANABE
Keyword(s):  

2012 ◽  
Vol 132 (7) ◽  
pp. 183-188 ◽  
Author(s):  
Takashi Saito ◽  
Mio Hamashima ◽  
Chihiro Saito ◽  
Motoichi Nakamura ◽  
Teiko Okazaki ◽  
...  

2019 ◽  
Vol 66 (4) ◽  
pp. 1937-1941 ◽  
Author(s):  
B. R. Thomas ◽  
S. Faramehr ◽  
D. C. Moody ◽  
J. E. Evans ◽  
M. P. Elwin ◽  
...  

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