Hidden transition in multiferroic and magnetodielectric CuCrO2 evidenced by ac-susceptibility. (23rd June 2017)

• Record Type: Journal Article
• Authors: Shukla, Kaushak K.; Pal, Arkadeb; Singh, Abhishek; Singh, Rahul; Saha, J.; Sinha, A. K.; Ghosh, A. K.; Patnaik, S.; Awasthi, A. M.; Chatterjee, Sandip
• Is Part Of: Europhysics letters. Volume 118:Number 2(2017:Apr.)
• Publication Date: 2017-06-23
• Subjects: 75.50.Lk -- 75.60.Ej -- 77.80.-e; Physics -- Periodicals; Electronic journals; 530.05
• DOI: 10.1209/0295-5075/118/27008
• Languages: English
• ISSNs: 0295-5075

Abstract

Abstract: Ferroelectric polarization, magnetic-field dependence of the dielectric constant and ac and dc magnetizations of frustrated CuCrO2 have been measured. A new spin freezing transition below 32 K is observed which is thermally driven. The nature of the spin freezing is to be a single-ion process. Dilution by the replacements of Cr ions by magnetic Mn ions showed suppression of the spin freezing transition suggesting it to be fundamentally a single-ion freezing process. The observed freezing, which is seemingly associated to geometrical spin frustration, represents a novel form of magnetic glassy behavior.