I was involved in Electrical and Magnetic Characterization of a Metallic Glass [(Fe_100-xV_x)₇₅P₁₅C₁₀ ]. This Nano crystalline metallic glass shows soft magnetic behavior with saturation magnetization of 130 emu/g, permeability of 2×10³ at 1 KHz as well as resonance behavior around 100 MHz

Following measurements were performed:

• SEM, EDX, XRD analysis for determining the morphology and topography
• Electrical Characterization:
  • I-V-T measurement using 4 probe method and detection of glass transition temperature through observing the first sharp fall in resistivity
  • Observation of frequency response (1-120MHz) using Wayne-Kerr impedance analyzer and modeling of equivalent circuit, Cole-Cole plot & Loss tangent, permeability measurement
  • High temperature (up to 500 degree Celsius) impedance analysis
• Magnetic Characterization:
  • High temperature measurement (up to 500 degree Celsius) of hysteresis & magnetoresistance
  • Measurement of magnetostriction for magnetic field of 0-5kOe
  • Low temperature magnetoresistance measurement (with ARSCryo closed cycle He Cryostat)

Lab: Material Science lab, BUET