TY - JOUR
T1 - In-situ high-energy X-ray diffuse-scattering study of the phase transition of Ni2MnGa single crystal under high magnetic field
AU - Wang, Gang
AU - Wang, Yan-Dong
AU - Ren, Yang
AU - Li, Dexin
AU - Liu, Yandong
AU - Liaw, Peter K.
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2010/5
Y1 - 2010/5
N2 - The defects-related microstructural features connected to the premartensitic and martensitic transition of a Ni2MnGa single crystal under a high magnetic field of 50 KOe applied along the [11̄0] crystallographic direction of the Heusler phase were studied by the in-situ high-energy X-ray diffuse-scattering experiments on the high energy synchrotron beam line 11-ID-C of APS and thermomagnetization measurements. Our experiments show that a magnetic field of 50 KOe applied along the [11̄0] direction of the parent Heusler phase can promote the premartensitic transition of Ni 2MnGa single crystal, but puts off martensite transition and the reverse transition. The premartensitic transition temperature (T PM) increases from 233 to 250 K (-40 to-23 °C). The martensite transition start temperature (M s) decreases from 175 to 172 K (-98 to-101 °C), while the reverse transition start temperature (A s) increases from 186 to 189 K (-87 to-84 °C). The high magnetic field leads to a rapid rearrangement of martensite variants below the martensite transition finish temperature (M f). The real transition process of Ni2MnGa single crystal under the high magnetic field was in-situ traced. © 2009 The Minerals, Metals & Materials Society and ASM International.
AB - The defects-related microstructural features connected to the premartensitic and martensitic transition of a Ni2MnGa single crystal under a high magnetic field of 50 KOe applied along the [11̄0] crystallographic direction of the Heusler phase were studied by the in-situ high-energy X-ray diffuse-scattering experiments on the high energy synchrotron beam line 11-ID-C of APS and thermomagnetization measurements. Our experiments show that a magnetic field of 50 KOe applied along the [11̄0] direction of the parent Heusler phase can promote the premartensitic transition of Ni 2MnGa single crystal, but puts off martensite transition and the reverse transition. The premartensitic transition temperature (T PM) increases from 233 to 250 K (-40 to-23 °C). The martensite transition start temperature (M s) decreases from 175 to 172 K (-98 to-101 °C), while the reverse transition start temperature (A s) increases from 186 to 189 K (-87 to-84 °C). The high magnetic field leads to a rapid rearrangement of martensite variants below the martensite transition finish temperature (M f). The real transition process of Ni2MnGa single crystal under the high magnetic field was in-situ traced. © 2009 The Minerals, Metals & Materials Society and ASM International.
UR - http://www.scopus.com/inward/record.url?scp=77952428251&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-77952428251&origin=recordpage
U2 - 10.1007/s11661-009-0108-7
DO - 10.1007/s11661-009-0108-7
M3 - RGC 21 - Publication in refereed journal
SN - 1073-5623
VL - 41
SP - 1269
EP - 1275
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 5
ER -