Magnetic–dielectric bistabilities and magnetodielectric coupling effects in a new layered hybrid perovskite: (C₆H₅(CH₂)₄NH₃)₂[MnCl₄]

Abstract

Bistabilities and coupling effects of multiple physical channels in molecule-based materials have attracted widespread interests in the field of sensors, switches, and memory devices. Seeking such materials and understanding the...

The odd–even effect in n-carboxyalkylammonium-containing organic–inorganic hybrids of Mn(ii) halides: structural and magnetic characterisation

“…13(a) and (c)) both show a gradual increase from 0.011 cm 3 mol −1 at 310 K, with a broad maximum of 0.017 cm 3 mol −1 at 87 K for C4MnCl and 0.018 cm 3 mol −1 at 83 K for C6MnCl . On further cooling, the susceptibility of both compounds shows a decrease followed by a sharp increase at the Neél temperature, T N , and a steep rise below T N , which signifies spontaneous magnetisation as a result of long range 3D AFM ordering due to spin canting, 91 with T N = 45.0(5) K for C4MnCl and T N = 43(1) K for C6MnCl , respectively. The spin canting is attributed to antisymmetric Dzyaloshinskii–Moriya interactions that occur due to the tilting of the [MnCl 6 ] 4− octahedra in the inorganic plane.…”

“…5,6 Of specific interest in the current study are 2D hybrid halide perovskites containing the divalent metal ion Mn 2+ , which imparts magnetic properties to the hybrid material. 7,8 Mn 2+ has a low toxicity as well as low cost due to its natural abundance, making it a useful component for such materials. 9…”

Hysteretic magnetism–dielectricity switching in 2D Hofmann type spin-crossover compounds

“…The simultaneous magneto-dielectric transition showed a 20 K-wide thermal hysteresis in the same temperature range. A few reported SCO compounds have also shown the consistency between magnetic and dielectric transitions, 43–46,54,55 whilst a wide thermal hysteresis is not common. This motivated us to further investigate the origin of dielectric anomaly and thermal hysteresis.…”