TITLE

Pressure-magnetic field induced phase transformation in Ni46Mn41In13 Heusler alloy

AUTHOR(S)
Rama Rao, N. V.; Manivel Raja, M.; Esakki Muthu, S.; Arumugam, S.; Pandian, S.
PUB. DATE
December 2014
SOURCE
Journal of Applied Physics;2014, Vol. 116 Issue 22, p223904-1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The effect of hydrostatic pressure and magnetic field on the magnetic properties and phase transformation in Ni46Mn41In13 Heusler alloy was investigated. Pressure (P)-magnetic field (H)-temperature (T) phase diagram has been constructed from experimental results. In the P–T contour of the phase diagram, the slope of the austenite-martensite phase boundary line appears positive (dT/dP>0), while it appears negative (dT/dH<0) in the H–T contour. The results revealed that pressure and magnetic field have opposite effect on phase stabilization. The combined effect of pressure and magnetic field on martensitic transition has led to two important findings: (i) pressure dependent shift of austenite start temperature (As) is higher when larger field is applied, and (ii) field dependent shift of As is lowered when a higher pressure is applied. The pressure and magnetic field dependent shift observed in the martensitic transformation has been explained on the basis of thermodynamic calculations. Curie temperature of the phases was found to increase with pressure at a rate of 0.6 K/kbar.
ACCESSION #
99950229

 

Related Articles

  • Magnetically Controlled Shape Memory Behaviour—Materials and Applications. Gandy, A. P.; Sheikh, A.; Neumann, K.; Neumann, K.-U.; Pooley, D.; Ziebeck, K. R. A. // AIP Conference Proceedings;6/19/2008, Vol. 1021 Issue 1, p82 

    For most metals a microscopic change in shape occurs above the elastic limit by the irreversible creation and movement of dislocations. However a large number of metallic systems undergo structural, martensitic, phase transformations which are diffusionless, displacive first order transitions...

  • Pressure effect on phase transitions and magnetocaloric effect in Gd5Ge4. Arnold, Zdenek; Skorokhod, Yuriy; Kamarad, Jiri; Magen, Cesar; Algarabel, Pedro A. // Journal of Applied Physics;Apr2009, Vol. 105 Issue 7, p07A934 

    We present the results of study of magnetocaloric effect in Gd5Ge4 under high hydrostatic pressure up to 9 kbar in magnetic field up to 5 T. At ambient pressure, temperature of the maximum value of the magnetic entropy change |ΔSM|max∼24 J* kg-1* K-1 [Δ(μ0H)=5 T] coincides with...

  • Magnetostructural coupling and magnetocaloric effect in Ni–Mn–In. Li, B.; Ren, W. J.; Zhang, Q.; Lv, X. K.; Liu, X. G.; Meng, H.; Li, J.; Li, D.; Zhang, Z. D. // Applied Physics Letters;10/26/2009, Vol. 95 Issue 17, p172506 

    Magnetic-field-induced martensitic phase transition and the concomitant change of volume are investigated in Ni–Mn–In alloy. A well-defined linear relationship is found between the quantity characterizing magnetic degree of freedom and the thermal expansion on behalf of structural...

  • Hydrostatic pressure effect on the martensitic transition, magnetic, and magnetocaloric properties in Ni50-xMn37+xSn13 Heusler alloys. Esakki Muthu, S.; Rama Rao, N. V.; Manivel Raja, M.; Arumugam, S.; Matsubayasi, K.; Uwatoko, Y. // Journal of Applied Physics;Oct2011, Vol. 110 Issue 8, p083902 

    We report upon the effect of hydrostatic pressure on the martensitic transition, magnetic properties, and magnetic entropy change in Ni50-xMn37 + xSn13 (x = 2, 3) Heusler alloys. The application of pressure has significantly shifted the martensitic transition temperature to higher values. A...

  • Density functional theory study of the α → ω martensitic transformation in titanium induced by hydrostatic pressure. Jafari, M.; Nobakhti, M.; Jamnezhad, H.; Bayati, K. // Condensed Matter Physics;2013, Vol. 16 Issue 3, p1 

    The martensitic α → ω transition was investigated in Ti under hydrostatic pressure. The calculations were carried out using the density functional theory (DFT) framework in combinationwith the Birch-Murnaghan equation of state. The calculated ground-state properties of α and...

  • Magnetoresistance and magnetocaloric effect at a structural phase transition from a paramagnetic martensitic state to a paramagnetic austenitic state in Ni50Mn36.5In13.5 Heusler alloys. Pathak, Arjun K.; Dubenko, Igor; Pueblo, Christopher; Stadler, Shane; Ali, Naushad // Applied Physics Letters;4/26/2010, Vol. 96 Issue 17, p172503 

    It is established, using magnetization measurements, that Ni50Mn36.5In13.5 is in a paramagnetic state (PS) above and below the martensitic transition temperature (TM). Magnetoresistance (MR) and magnetic entropy changes (ΔSM) in the vicinity of TM were studied. MR and ΔSM at TM were...

  • Phase diagram and composition optimization for magnetic shape memory effect in Ni–Co–Mn–Sn alloys. Cong, D. Y.; Roth, S.; Pötschke, M.; Hürrich, C.; Schultz, L. // Applied Physics Letters;7/12/2010, Vol. 97 Issue 2, p021908 

    The composition dependent phase transformation and magnetic properties of the Ni50-xCoxMn39Sn11 (0≤x≤10) alloys were systematically investigated. Based on the obtained results, the phase diagram of this alloy system was established. Considering the combination of large magnetization...

  • Large magnetoresistance in Ni50Mn34In16 alloy. Sharma, V. K.; Chattopadhyay, M. K.; Shaeb, K. H. B.; Chouhan, Anil; Roy, S. B. // Applied Physics Letters;11/27/2006, Vol. 89 Issue 22, p222509 

    The authors report the observation of large magnetoresistance in Ni50Mn34In16 alloy. This alloy undergoes an austenite-martensite phase transformation which can be strongly affected by the applied magnetic field. This latter effect produces very large magnetoresistance at relatively high...

  • Thermal expansion of NiMnGa alloy. Musabirov, I.; Mulyukov, Kh.; Koledov, V.; Shavrov, V. // Technical Physics;Mar2011, Vol. 56 Issue 3, p423 

    The temperature dependence of the thermal expansion of polycrystalline NiMnGa alloy samples is studied in the as-cast state and after homogenizing annealing. A sample in which twins are mainly oriented normal to the sample length shortens jumpwise during the martensitic transformation. A sample...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics