Mandal, Amrita ; Mitra, Sreemanta ; Datta, Anindya ; Banerjee, Sourish ; Chakravorty, Dipankar (2012) Magnetodielectric effect in CdS nanosheets grown within Na-4 mica Journal of Applied Physics, 111 (7). 074303-1-074303-4. ISSN 0021-8979
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Official URL: http://jap.aip.org/resource/1/japiau/v111/i7/p0743...
Related URL: http://dx.doi.org/10.1063/1.3698501
Abstract
CdS nanosheets of thickness 0.6 nm were grown within the interlayer spaces of Na-4 mica. Magnetization measurements carried out in the temperature range 2–300 K showed the composites to have weak ferromagnetic-like properties even at room temperature. The saturation magnetization (MS) at room temperature was found to be higher than that reported for CdS nanoparticles. The higher value of MS may be ascribed to the presence of a large number defects in the present CdS system, due to a large surface to volume ratio in the nanosheets as compared to that of CdS nanoparticles. The nanocomposites exhibited a magnetodielectric effect with a dielectric constant change of 5.3% for a magnetic field of 0.5 T. This occurred due to a combination of magnetoresistance and Maxwell-Wagner effect as delineated in the model developed by Catalan.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Cadmium Compounds; Ferromagnetic Materials; II-VI Semiconductors; Magnetic Multilayers; Magnetic Semiconductors; Magnetisation; Magnetoelectric Effects; Magnetoresistance; Nanocomposites; Nanomagnetics; Permittivity; Thermomagnetic Effects |
| ID Code: | 96490 |
| Deposited On: | 21 Dec 2012 10:08 |
| Last Modified: | 21 Dec 2012 10:08 |
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