Influence of Demagnetization Effect on Giant Magneto Impedance of soft Ferromagnetic Metal (2009)
The large change in electromagnetic impedance in ferromagnetic state of soft magnetic metals in presence of biasing magnetic field is associated with change in screening of electromagnetic field. The...
Gyrosonics a Novel Stimulant for Autonomic Nervous System (2009)
Ghatak, S. K., Ray, S. S., Choudhuri, R., Banerjee, S.
Gyrosonics refers to novel audio binaural stimulus that produces rotational perceptions of sound movement in head at a particular predetermined frequency. Therapeutic effect observed with this is...
Reddy, G. Gangadhar, Ramakanth, A., Ghatak, S. K., Behera, S. N., Nolting, W., Rao, T. Venkatappa
A model calculation is presented with the aim to study the interplay between magnetic and structural transitions. The model consists of an orbitally doubly degenerate conduction band and a periodic...
Influence of stress on magneto-impedance in Co71-xFexCr7Si8B14 (x = 0, 2) amorphous ribbons (2006)
Systematic measurements of stress-impedance (SI) have been carried out using Co-rich amorphous ribbons of nominal composition Co71-xFexCr7Si8B14 (x = 0, 2) at various excitation frequencies and bias...
Simulation of stress-impedance effects in low magnetostrictive films (2006)
A theoretical study of stress-impedance effect based on the solution of Landau-Lifsitz-Gilbert equation has been carried out. The results show that stress impedance effects depend largely on several...
Magneto-impedance (MI) effects have been observed for amorphous Fe73.5Nb3Cu1Si13.5B9 ribbon which has been excited by an a.c. magnetic field parallel to the length of the ribbon. Maximum relative...
Stress - and Magneto-Impedance in Co71-xFexCr7Si8B14 (x = 0, 2) amorphous ribbons (2006)
Systematic measurements of stress impedance (SI) and magneto-impedance (MI) have been carried out using Co-rich amorphous ribbons of nominal composition Co71-xFexCr7Si8B14 (x = 0, 2) at various...
Magneto-impedance (MI) of soft ferromagnetic materials is a sensitive function of the amplitude and frequency of exciting a.c magnetic field. MI (Z) of amorphous ferromagnetic ribbon of nominal...
Magnetic Field and Displacement sensor based on Giant Magneto-impedance effect (2006)
A two-core transducer assembly using a Fe73.5Nb3Cu1Si13.5B9 ribbon to detect a change of magnetic field is proposed and tested for displacement (linear and angular) and current sensor. Two identical...
The magneto-impedance (MI) in amorphous ribbon of nominal composition Fe73.5Nb3Cu1Si13.5B9 has been measured at 1MHz and at room temperature for different configurations of exciting a.c and biasing...
The resistive and reactive components of magneto-impedance was studied for the as-quenched and microwave annealed amorphous Fe73.5Nb3Cu1Si13.5B9 ribbon as a function of biasing d.c magnetic fields...
Giant magneto-impedance in Ag-doped La0.7Sr0.3MnO3 (2006)
Ghatak, S. K., Kaviraj, B., Dey, T. K.
The resistive and reactive parts of the magneto-impedance of sintered ferromagnetic samples of La0.7Sr0.3-xAgxMnO3 (x = 0.05, 0.25) have been measured at room temperature (
Arterial Blood Pressure wave monitoring is considered to be important in assessment of cardiovascular system. We developed a novel pulse wave detection system using low frequency specific...
Effect of strain on the transport properties of the manganite systems (2001)
Basak, S., Chaudhuri, I., Ghatak, S. K.
The effect of strain on the resistivity and thermopower of ferromagnetic manganites has been examined based on the model that incorporates the electron-lattice interaction through the Jahn-Teller...
Pseudogap and its influence on normal and superconducting states of cuprates (2000)
Chaudhuri, I., Taraphder, A., Ghatak, S. K.
A model incorporating simultaneous superconducting and lattice instabilities has been studied in detail to estimate the nature of coupling and inter-play between them. The phase diagram is obtained...
Magnetic and Microstructural Properties of YBa2Cu3O7-x-Ag Composite. (1998)
Sen, D., Bhattacharya, D., Ghatak, S. K., Chopra, K. L.
This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, composite materials, mmc materials and material types:, ag...
Coexistence of Band Jahn Teller Distortion and superconductivity in correlated systems (1998)
Ghosh, Haranath, Mitra, Manidipa, Behera, S. N., Ghatak, S. K.
The co-existence of band Jahn-Teller (BJT) effect with superconductivity (SC) is studied for correlated systems, with orbitally degenerate bands using a simple model. The Hubbard model for a doubly...
Ghosh, Haranath, Behera, S. N., Ghatak, S. K., Ray, D. K.
The interplay between the band Jahn-Teller distortion and the superconductivity is studied for the system whose Fermi level lies in two-fold degenerate band. Assuming that the lattice distortion is...