Welcome to the
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An active and diverse research group which focuses on the development of magnetic materials and devices for micromagnetic application in ICT. The research activity of the Micropower - Nanomagnetics Group is concerned with the provision of power to Microsystems.
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Room temperature ferroelectric and magnetic investigations and detailed phase analysis of Aurivillius phase thin film published in JAP
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Shape-independent permeability model for uniaxially-anisotropic ferromagnetic NiFe and CoPRe thin films published in APL.
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Large Scale Monodisperse Hexagonal Arrays of Superparamagnetic Iron Oxides Nanodots using A Facile Block Copolymer Inclusion Method in Adv. Mater.
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Improved thermal stability of Electrodeposited amorphous Co–P based alloy published in J. Magn. Mater.
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Novel Findings on Nanomagnetics Feature in Physical Review Letters & PRB - Rapid Comm. This work within an international collaboration between India (CGCRI, Kolkata) and Ireland (Tyndall National Institute, Cork) has reported giant tunable exchange bias in a ‘Super Spin Glass (SSG)’ mediated ferromagnetic (FM) - antiferromagnetic (AFM) nanocomposites.
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An unique way of exploiting the strong interplay between the electrical and mechanical degrees of freedom of Duffing Oscilator for "Surfing the High Energy Output Branch of Nonlinear Energy Harvesters" has been conceived. This work is published in the reputed journal of Physical Review Letters.
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The "Influence of Combined Fundamental Potentials in a nonlinear vibration energy harvester" has been deeply investigated and the novel outcome has been successfully published in the esteemed high impact factor journal of Scientific Reports.
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Prof. Dr. Saibal Roy, Micro-Nano-Systems Center; Tyndall National Institute, Department of Physics, University College Cork, Ireland
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Kankana won the poster competition at NIPS international summer school 2019 in Perugia, Italy
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Arindam presented his work in CONNECT Plenary 2022 at Waterford, Ireland.
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Various positions are available
Selected Recent Publications
- Generation of Microwaves With Tuneable Frequencies in Ultracompact “Magnon Microwave Antenna” via Phonon-Magnon-Photon Coupling; A. Samanta, S. Roy, IEEE Transactions on Electron Devices (2022)
- A Concertina-Shaped Vibration Energy Harvester-Assisted NFC Sensor With Improved Wireless Communication Range, K. Paul, D. R. Gawade, R. B. V. B. Simorangkir, B. O’Flynn, J. L. Buckley, A. Amann, and S. Roy, IEEE Internet of Things Journal, 9 (24), 25474, (2022)
- Tapered nonlinear vibration energy harvester for powering Internet of Things, K. Paul, A. Amann, S. Roy, Applied Energy, 283, 116267 (2021)
- Invited Article: MEMS based vibrational energy harvesting & conversion employing micro/nano-magnetics; S Roy, D Mallick, K Paul; IEEE Trans. Mag. 55, 4700315, (2019)
- Magnetic performances and switching behaviour of Co-rich CoPtP micro-magnets for applications in magnetic MEMS; D. Mallick, K. Paul, T. Maity, S. Roy; J. Appl. Phys. 125, 023902, (2019)
- Observation of complete inversion of the hysteresis loop in bimodal magnetic thin film; T. Maity, D. Kepaptsoglou, M. Schmidt, Q. Ramasse and Saibal Roy; Phys Rev B- Rapid Com, 95, 100401(R), 2017
- Surfing the high energy output branch of nonlinear energy harvesters, D. Mallick, A. Amann and S. Roy, Phys. Rev. Lett. 117, 197701, (2016)
- Influence of combined potentials in a nonlinear vibrational energy harvester; P Podder, D Mallick, A Amann and S Roy; Scientific Reports; 6, 37292, (2016)
- Origin of asymmetric exchange bias in Bi2Fe4O9- BiFeO3 nanocomposite; T Maity, S Goswami, D Bhattacharya, and Saibal Roy; Phys Rev B- Rapid Com, 89, (14), 140411, (2014)
- Evidence of Magnetoelectric Coupling from Direct Electrical Measurements on Nanoscale BiFeO3; S Goswami, D Bhattacharya, L Keeney, T Maity, G C. Das, W Li, CZ. Gu, M.E. Pemble and S Roy; Phys Rev B, 90, (10), 104402, (2014)
- Electrical/optical dual-function redox potential transistor; Shunpu Li, Wensi Wang, Ju Xu, Daping Chu, Z. John Sheng, Saibal Roy; Scientific Reports, 3, 3391, (2013)
- Size and space controlled hexagonal arrays of superparamagnetic iron oxide nanodots: magnetic studies and application; T Ghoshal, T Maity, Ramsankar Senthamaraikannan, M. T. Shaw, P Carolan, J D. Holmes, S Roy, M A. Morris; Scientific Reports, 3, 2772, (2013)
- Invited Feature Article: Magnetic-Field-Induced Ferroelectric Switching in Multiferroic Aurivillius Phase Thin Films; L Keeney, T Maity, M Schmidt, A Amann, N Deepak, N Petkov, S Roy, M E. Pemble, R W. Whatmore; J. Am. Cerm. Soc., 1-19, (2013); Editorially selected as cover article (including cover PFM image)
- Superspin glass mediated giant spontaneous exchange bias in a nanocomposite of BiFeO3 - Bi2Fe4O9; Tuhin Maity, Sudipta Goswami, Dipten Bhattacharya, and Saibal Roy; Phys. Rev. Lett., 110, 107201, (2013)
- Invited Review Article: Review of Integrated Magnetics for Power Supply on Chip (PwrSoC); Cian Ó Mathúna, Ningning Wang, Santosh Kulkarni, Saibal Roy, IEEE Trans. Power Electron; 27, 4799, (2012)
- Large scale monodisperse hexagonal arrays of superparamagnetic iron oxides nanodots: a facile block copolymer inclusion method; T. Ghosal, T. Maity, J. F. Godsell, S Roy, M A Morris; Adv. Mater., 24, 2390-2397, (2012)
- Self-Aligned High-Resolution Printed Polymer Transistors; S Li, W Chen, D Chu, S Roy; Adv. Mater., 23, 4107, (2011)
- Shape-independent permeability model for uniaxially-anisotropic ferromagnetic thin films; B. Jamieson, T. O’Donnell, S. Kulkarni, S. Roy; Appl. Phys. Lett.; 96, 202509, (2010)
Complete list can be found here.
