Synthesis, Structure and Magnetic Properties of NiFe3O5. (24th January 2022)

• Record Type: Journal Article
• Authors: Hong, Ka H.; Solana-Madruga, Elena; Coduri, Mauro; Ritter, Clemens; Attfield, J. Paul
• Is Part Of: ECS journal of solid state science and technology. Volume 11:Number 1(2022)
• Publication Date: 2022-01-24
• Subjects: Solid state chemistry -- Periodicals; Electronics -- Materials -- Periodicals; Electrochemistry -- Periodicals; 541.0421
• DOI: 10.1149/2162-8777/ac4a81
• Languages: English
• ISSNs: 2162-8777

Abstract

Abstract : A new CaFe3 O5 -type phase NiFe3 O5 (orthorhombic Cmcm symmetry, cell parameters a = 2.89126(7), b = 9.71988(21) and c = 12.52694(27) Å) has been synthesised under pressures of 12–13 GPa at 1200 °C. NiFe3 O5 has an inverse cation site distribution and reveals an interesting evolution from M 2+ (Fe 3+ )2 Fe 2+ O5 to Fe 2+ (M 2+ 0.5 Fe 3+ 0.5 )2 Fe 3+ O5 distributions over three distinct cation sites as M 2+ cation size decreases from Ca to Ni. Magnetic susceptibility measurements show successive transitions at 275, ∼150, and ∼20 K and neutron diffraction data reveal a series of at least three spin-ordered phases with evolving propagation vectors k = [0 0 0] → [0 k y 0] → [½ ½ 0] on cooling. The rich variety of magnetically ordered phases in NiFe3 O5 likely results from frustration of Goodenough-Kanamori exchange interactions between the three spin sublattices, and further interesting magnetic materials are expected to be accessible within the CaFe3 O5 -type family.