Exchange bias in LiNi0.5Mn1.5O4–NiO nanocomposites. (August 2015)

• Record Type: Journal Article
• Authors: Xu, M. H.; Wang, Z. H.; Liu, L. Z.; Yang, Q.; Yu, Z. A.; Shen, L. J.; Zhong, W.; Du, Y. W.
• Is Part Of: Materials research innovations. Volume 19:Number 5(2015)
• Page Start: 355
• Page End: 360
• Publication Date: 2015-08
• Subjects: Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1433075X15Y.0000000012
• Languages: German
• ISSNs: 1432-8917

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>Composites LiNi_0.5Mn_1.5O₄–NiO nanosticks were prepared by a simple molten salt route of adding MnSO₄ to molten LiNO₃, NaNO₃ and slightly excess NiSO₄·6H₂O. Field emission scanning electron microscopy (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM) investigations revealed that one-dimensional composites LiNi_0.5Mn_1.5O₄–NiO nanosticks were generated in a large quantity. The result of dc and ac magnetisation, as well as magnetic hysteresis measurements, shows that three different magnetic phases, i.e. ferrimagnetic, antiferromagnetic (AFM) and spin-glass-like (SGL) phases may coexist in LiNi_0.5Mn_1.5O₄–NiO nanocomposites. Furthermore, magnetic measurements suggest that the exchange bias (EB) effect was obtained at low temperature.</p> </abstract>