Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Uno Gäfvert"'
Autor:
Uno Gäfvert, Eva Mårtensson
Publikováno v:
Journal of Physics D: Applied Physics. 37:112-119
A three-dimensional network model for performing non-linear time-dependent simulations of the electrical characteristics related to a composite material is presented. The considered compounds are represented by a cubic lattice and consist of conducti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb98c05998f52015a10b61c239dc120e
https://doi.org/10.1088/0022-3727/37/1/019
https://doi.org/10.1088/0022-3727/37/1/019
Publikováno v:
11th International Symposium on High-Voltage Engineering (ISH 99).
This paper addresses the measurement of partial discharges (PD) for a range of low frequencies of applied voltage and explores the frequency dependence of PD patterns for a few objects. The aim is to determine the existence of frequency-dependent tre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8df44155ed18d7715a4a6bfe75e7675e
https://doi.org/10.1049/cp:19990927
https://doi.org/10.1049/cp:19990927
Publikováno v:
Physica Scripta. 15:276-280
Susceptibility, resistivity and thermal expansion measurements have been performed on single crystals of FeP. The temperature ranges were 4.2 K-300 K, 15 K-300 K and 95 K-300 K respectively. The susceptibility measurements show a magnetic transition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a62d1602e0929709e158fa5e1a276822
https://doi.org/10.1088/0031-8949/15/4/009
https://doi.org/10.1088/0031-8949/15/4/009
Publikováno v:
Journal of Physics and Chemistry of Solids. 38:1333-1339
The influence of the magnetocrystalline anisotropy energy on the static torque of uniaxial antiferromagnets is investigated. It is shown that this influence provides a method for accurate determination of the first anisotropy constant K1 of most unia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5297e63ae5b6544148ce5b5219dfa957
https://doi.org/10.1016/0022-3697(77)90004-x
https://doi.org/10.1016/0022-3697(77)90004-x
Publikováno v:
Physica Scripta. 14:5-10
A magnetometer for measuring torques in the range 10-10 Nm -5·10-4 Nm (10-3 dyncm -5·103 dyncm) is described. Torque compensation is achieved by feedback from a photodetector into a PID regulator system which generates a current through a compensat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::437783a07a3426d12ca991533903482c
https://doi.org/10.1088/0031-8949/14/1-2/001
https://doi.org/10.1088/0031-8949/14/1-2/001
Publikováno v:
Physica Scripta. 20:105-108
SQUID magnetometer measurements of the magnetic susceptibility (χ|| and χ⊥) of MnF2 have been carried out in the temperature interval 4.2 to 300 K, with special emphasis paid to the region in the immediate vicinity of the Neel point. By combining
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b908b96c382133a74f0ffa6273774c14
https://doi.org/10.1088/0031-8949/20/1/019
https://doi.org/10.1088/0031-8949/20/1/019
Publikováno v:
Solid State Communications. 23:9-12
The first anisotropy constant K 1 as well as the differential susceptibility ΔX = Xχ - X∥ of MnF 2 has been determined from static torque measurements. The temperature range was for K 1 4.2 K to 66 K and for ΔX 4.2 K to 300 K. The result for K 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a45b9384acde789b6846ae216fa0d56
https://doi.org/10.1016/0038-1098(77)90617-2
https://doi.org/10.1016/0038-1098(77)90617-2
Autor:
Uno Gäfvert
Publikováno v:
Physica Scripta. 14:257-259
A low frequency AC resistance bridge, suitable for high resolution measurements on small resistances, is described. A precision of 0.01% can be obtained down to the milliohm range with a sample current of 10 mA. A special current comparator is used t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86c8eb28c997552538f70e47d8abae50
https://doi.org/10.1088/0031-8949/14/6/001
https://doi.org/10.1088/0031-8949/14/6/001
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