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Materials 2010, 3(2), 1244-1268; doi:10.3390/ma3021244

Magnetic and Optical Properties of Submicron-Size Hollow Spheres

Research Center for Materials Science & Department of Chemistry, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
Present address: Division of Physics and Applied Physics, School of Physical & Mathematical Sciences, 21 Nanyang Link, Nanyang Technological University, 637371 Singapore
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Received: 30 December 2009 / Revised: 2 February 2010 / Accepted: 19 February 2010 / Published: 21 February 2010
(This article belongs to the Special Issue Magnetic Nanoparticles)
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Abstract

Magnetic hollow spheres with a controlled diameter and shell thickness have emerged as an important class of magnetic nanomaterials. The confined hollow geometry and pronouncedly curved surfaces induce unique physical properties different from those of flat thin films and solid counterparts. In this paper, we focus on recent progress on submicron-size spherical hollow magnets (e.g., cobalt- and iron-based materials), and discuss the effects of the hollow shape and the submicron size on magnetic and optical properties.
Keywords: hollow sphere; cobalt and cobalt oxides; iron and iron oxides; antiferromagnet; magnetic hysteresis; domain structure; magnetization relaxation; exchange bias; uncompensated spin; Mie scattering hollow sphere; cobalt and cobalt oxides; iron and iron oxides; antiferromagnet; magnetic hysteresis; domain structure; magnetization relaxation; exchange bias; uncompensated spin; Mie scattering
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Ye, Q.-L.; Yoshikawa, H.; Awaga, K. Magnetic and Optical Properties of Submicron-Size Hollow Spheres. Materials 2010, 3, 1244-1268.

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