Room temperature soft ferromagnetism in the nanocrystalline form of YCo2- a well-known bulk Pauli paramagnet

Narayana Jammalamadaka, S. ; Sampathkumaran, E. V. ; Satya Narayana Murthy, V. ; Markandeyulu, G. (2008) Room temperature soft ferromagnetism in the nanocrystalline form of YCo2- a well-known bulk Pauli paramagnet Applied Physics Letters, 92 (19). 192506_1-192506_3. ISSN 0003-6951

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Official URL: http://apl.aip.org/resource/1/applab/v92/i19/p1925...

Related URL: http://dx.doi.org/10.1063/1.2929380

Abstract

The Laves phase compound YCo2 is a well-known exchange-enhanced Pauli paramagnet. We report here that, in the nanocrystalline form, this compound interestingly is an itinerant ferromagnet at room temperature with a low coercive field. The magnitude of the saturation moment (about 1μB per formula unit) is large enough to infer that the ferromagnetism is not a surface phenomenon in these nanocrystallites. Since these ferromagnetic nanocrystallites are easy to synthesize with a stable form in air, one can explore applications, particularly where the hysteresis is a disadvantage.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Cobalt Alloys; Coercive Force; Ferromagnetic Materials; Magnetic Hysteresis; Magnetic Moments; Magnetic Transitions; Nanostructured Materials; Paramagnetic Materials; Yttrium Alloys
ID Code:45747
Deposited On:29 Jun 2011 03:33
Last Modified:29 Jun 2011 03:33

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