Near-Room-Temperature Colossal Magnetodielectricity and Multiglass Properties in Partially DisorderedLa2NiMnO6

Choudhury, D. ; Mandal, P. ; Mathieu, R. ; Hazarika, A. ; Rajan, S. ; Sundaresan, A. ; Waghmare, U. V. ; Knut, R. ; Karis, O. ; Nordblad, P. ; Sarma, D. D. (2012) Near-Room-Temperature Colossal Magnetodielectricity and Multiglass Properties in Partially DisorderedLa2NiMnO6 Physical Review Letters, 108 (12). ISSN 0031-9007

Full text not available from this repository.

Official URL: http://doi.org/10.1103/PhysRevLett.108.127201

Related URL: http://dx.doi.org/10.1103/PhysRevLett.108.127201

Abstract

We report magnetic, dielectric, and magnetodielectric responses of the pure monoclinic bulk phase of partially disordered La 2 NiMnO 6 , exhibiting a spectrum of unusual properties and establish that this compound is an intrinsically multiglass system with a large magnetodielectric coupling (8%–20%) over a wide range of temperatures (150–300 K). Specifically, our results establish a unique way to obtain colossal magnetodielectricity, independent of any striction effects, by engineering the asymmetric hopping contribution to the dielectric constant via the tuning of the relative-spin orientations between neighboring magnetic ions in a transition-metal oxide system. We discuss the role of antisite (Ni-Mn) disorder in emergence of these unusual properties.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:120039
Deposited On:22 Jun 2021 05:12
Last Modified:22 Jun 2021 05:12

Repository Staff Only: item control page