Microstructure-dependent coercivity in monodispersed hematite particles

Rath, C and Sahu, K K and Kulkarni, S D and Anand, S and Date, S K and Das, R P and Mitra, N C (1999) Microstructure-dependent coercivity in monodispersed hematite particles. Applied Physics Letters, 75 (26). pp. 4171-4173.

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Microstructure and magnetic properties of monodispersed pseudocubic and trapezoidal particles with varying sizes prepared through the hydrothermal precipitation route are reported. The coercivity for trapezoidal particles was similar to that of reported values. For pseudocubic particles, however, the coercivity is unusually high (similar to 6 kOe) as compared to the maximum value (3 kOe) reported in the literature. Detailed microstructural analysis revealed that particles with a well-defined shape are, in fact, polycrystalline. The high coercivity and its variation with particle shape and size are correlated to the internal nanostructure of the particles. (C) 1999 American Institute of Physics. [S0003-6951(99)02552-8].

Item Type:Article
Official URL/DOI:http://www.nmlindia.org
Uncontrolled Keywords:monodispersed hematite particles
Divisions:Metal Extraction and Forming
ID Code:1137
Deposited By:Sahu A K
Deposited On:22 Jun 2010 17:51
Last Modified:08 Feb 2012 14:31
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