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Content Provider | IEEE Xplore Digital Library |
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Author | Umetsu, R.Y. Okubo, A. Fujita, A. Kanomata, T. Ishida, K. Kainuma, R. |
Copyright Year | 1965 |
Abstract | The spin-wave stiffness constant D and the Curie temperature TC for series of L21 phase in Co2CrGa, Co2MnGa, Co2Mn(Al1-xSix) , Co2Fe(Al1-xSix), and Co2Fe(Ga1-xSix) Heusler alloys were evaluated from the thermomagnetization measurements. For the Co2CrGa, Co2MnGa, and Co2Mn(Al1-xSix) alloys, there was a linear relation between D and TC . The tendency between D and TC was different from that for Co2Fe(Al1-xSix) and Co2Fe(Ga1-xSix) alloys, that is, TC was in the temperature region from 1040 to 1100 K indicating weak concentration dependence, whereas D was sensitive to the composition. For example, D changed from 2.28 meV ·nm2 for x=1 (Co2FeSi) to 5.24 meV ·nm2 for x=0 (Co2FeGa) in the case of Co2Fe(Ga1-xSix) alloys. It was suggested that magnetic stability against the temperature of the Co-based Heusler alloys containing Fe element was governed not only by the spin-wave excitation but also by the other kinds of excitation. |
Sponsorship | IEEE Magnetics Society |
Starting Page | 2451 |
Ending Page | 2454 |
Page Count | 4 |
File Size | 1269224 |
File Format | |
ISSN | 00189464 |
Volume Number | 47 |
Issue Number | 10 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2011-10-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Temperature measurement Iron Phase measurement Magnetic tunneling Magnetization Magnetometers spin-wave stiffness constant Co-based Heusler alloys Curie temperature half-metal-type ferromagnets magnetic stability |
Content Type | Text |
Resource Type | Article |
Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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