• M MALAIDURAI

      Articles written in Bulletin of Materials Science

    • Investigation on the structural and magnetic properties of M$_x$Bi$_{2–x}$Te$_3$ (M = Gd, Fe, Cr) (x = 0, 1) using colloidal hot-injection method

      N SYED KALEEMULLAH M MALAIDURAI R THANGAVEL J KUMAR

      More Details Abstract Fulltext PDF

      Gadolinium-doped bismuth telluride (GBT), ferric-doped bismuth telluride (FBT) and chromium-doped bismuth telluride (CBT) nanocrystals have been synthesized using colloidal hot-injection method with same doping ratio. Field-oriented uniaxial anisotropic ferromagnetic properties for all the samples were analysed from the squareness ratio ($M_r$/$M_s$), $K_1$ (magnetocrystalline anisotropic constant), $K_1$$^v$ (shape anisotropic constant), $K_{eff}$ (effective anisotropy constant) and magnetic energy using vibration sample magnetometer. The magneto-impedance (MI) spectral ratio (${\Delta}$Z/$Z_0$)% has been influenced by rotational magnetization, as well as domain wall motion with respect to applied magnetic field. The results have proven that the GBT thin film sample exhibits the maximum MI effect. Our results may shed light on the simple method of synthesis and development of the effective MI materials based on rare-earth/transition-doped bismuth telluride for the realization of magnetic sensor applications in future.

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      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

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      Posted on July 25, 2019

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