Title :
Observation of magnetic intermartensitic phase transition in off-stochiometric Ni-Mn-Ga single crystal
Author :
Srivastava, Vijay Kumar ; Chatterjee, Ratnamala
Author_Institution :
Dept. of Phys., Indian Inst. of Technol., New Delhi, India
Abstract :
We report the temperature dependence of electrical resistivity and magnetization for the off-stochiometric Ni49Mn29Al22 single crystal. Resistivity data give the clear evidence of intermartensitic structural transformation at ∼273 K, followed by a martensitic transformation at ∼341 K. Intermartensitic phase transformation is also observed in the magnetization versus temperature data.
Keywords :
SQUID magnetometers; aluminium alloys; electrical resistivity; gallium alloys; magnetic transitions; magnetisation; manganese alloys; martensitic transformations; nickel alloys; shape memory effects; Ni-Mn-Ga; Ni49Mn29Al22; electrical resistivity; magnetic intermartensitic phase transition; magnetization; martensitic transformation; off-stochiometric crystal; structural transformation; superconducting quantum interference device magnetometer; temperature dependence; Conductivity; Cooling; Crystals; Heating; Magnetic field measurement; Magnetic hysteresis; Magnetization; SQUIDs; Shape memory alloys; Temperature distribution; Phase transformation; resistivity; superconducting quantum interference device (SQUID) magnetometer;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854750
