Details
| Original language | English |
|---|---|
| Article number | 9082010 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 56 |
| Issue number | 7 |
| Publication status | Published - 29 Apr 2020 |
Abstract
The existence of two Curie temperatures in the temperature interval of the martensitic phase of a Ni51.9Mn27.0Ga21.1 alloy has been verified. This phenomenon was confirmed in both magnetic and electrical impedance measurements. Additionally, modified Arrott plot calculations were employed to determine order and temperatures of magnetic transitions occurring in a Ni51.9Mn27.0Ga21.1 alloy. The results of the calculations are in line with the ones obtained in the experiments. They indicate that the second-order transitions on cooling and heating in this alloy occur at different temperatures with thermal hysteresis of 7 K. The measurements of the dependence of AC impedance on temperature allowed to distinguish these magnetic transitions from the nearby martensitic one.
Keywords
- AC impedance, critical exponents, Curie temperature, Ni-Mn-Ga
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Magnetics, Vol. 56, No. 7, 9082010, 29.04.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Order and Temperatures of Magnetic Transitions in a Ni.Mn.Ga. Alloy
AU - Konoplyuk, S. M.
AU - Kokorin, V. V.
AU - Kolomiets, A. V.
AU - Paukov, M.
AU - Kastil, J.
AU - Gerstein, Gregory
AU - Maier, Hans-Jürgen
N1 - Funding Information: ACKNOWLEDGMENT This work was supported in part by the Materials Growth and Measurement Laboratory MGML, Magnetization Measurements, through the Program of Large Infrastructures for Research, Experimental Development, and Innovation under Project LM2018096 and in part by the Deutsche Forschungs-gemeinschaft under Grant MA1175/44-1.
PY - 2020/4/29
Y1 - 2020/4/29
N2 - The existence of two Curie temperatures in the temperature interval of the martensitic phase of a Ni51.9Mn27.0Ga21.1 alloy has been verified. This phenomenon was confirmed in both magnetic and electrical impedance measurements. Additionally, modified Arrott plot calculations were employed to determine order and temperatures of magnetic transitions occurring in a Ni51.9Mn27.0Ga21.1 alloy. The results of the calculations are in line with the ones obtained in the experiments. They indicate that the second-order transitions on cooling and heating in this alloy occur at different temperatures with thermal hysteresis of 7 K. The measurements of the dependence of AC impedance on temperature allowed to distinguish these magnetic transitions from the nearby martensitic one.
AB - The existence of two Curie temperatures in the temperature interval of the martensitic phase of a Ni51.9Mn27.0Ga21.1 alloy has been verified. This phenomenon was confirmed in both magnetic and electrical impedance measurements. Additionally, modified Arrott plot calculations were employed to determine order and temperatures of magnetic transitions occurring in a Ni51.9Mn27.0Ga21.1 alloy. The results of the calculations are in line with the ones obtained in the experiments. They indicate that the second-order transitions on cooling and heating in this alloy occur at different temperatures with thermal hysteresis of 7 K. The measurements of the dependence of AC impedance on temperature allowed to distinguish these magnetic transitions from the nearby martensitic one.
KW - AC impedance
KW - critical exponents
KW - Curie temperature
KW - Ni-Mn-Ga
UR - http://www.scopus.com/inward/record.url?scp=85087398233&partnerID=8YFLogxK
U2 - 10.1109/TMAG.2020.2991317
DO - 10.1109/TMAG.2020.2991317
M3 - Article
AN - SCOPUS:85087398233
VL - 56
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 7
M1 - 9082010
ER -