Coexistence of magnetic and electric orderings in a divalent Cr²⁺-based multiaxial molecular ferroelectric

Abstract

Multiferroic materials have attracted great interest for their underlying new science and promising applications in data storage and mutual control devices. However, they are still very rare and highly imperative...

An unprecedented azobenzene-based organic single-component ferroelectric

“…As a second-order nonlinear optical effect, the SHG effect could be used to detect non-centrosymmetric crystals, because SHG response is only allowed in crystals that are devoid of inversion symmetry. 32,33 APFA shows a clear SHG signal at room temperature with intensity being about 1/4 of that of the KDP standard, in accordance with the non-centrosymmetric polar P 2 1 space group (the inset of Fig. 2c).…”

Recent Advances in Organic and Organic–Inorganic Hybrid Materials for Piezoelectric Mechanical Energy Harvesting

“…A thorough examination of several measurements and interpretations, including P–E hysteresis loop, SHG, PFM, electric field‐dependent dielectric constant measurements and controlling the kinetics of piezo‐electric domain orientation, would improve our understanding. There is a significant potential for benefit in terms of materials design by computational modeling, ranging from density functional theory approaches to interfacial and composite modeling to facilitate our multiscale understanding of these materials. A series of high piezo‐ and ferroelectric organic and organic‐inorganic hybrid materials are reported in the literature but are yet to be evaluated regarding their energy‐harvesting behavior. [ 154–180 ] In the future, these materials can also be used to enhance the power generation competence of piezo‐electric energy harvesting systems. While materials are often evaluated for energy harvesting applications by charging storage capacitors and illuminating LEDs or LCD screens, there are fewer reports on complete harvesting systems based on organic and organic–inorganic hybrids. As a notable example of such potential, glycine crystals have recently been used as a piezoelectric sensor for structural health monitoring of pipe damage.…”

“…A series of high piezo‐ and ferroelectric organic and organic‐inorganic hybrid materials are reported in the literature but are yet to be evaluated regarding their energy‐harvesting behavior. [ 154–180 ] In the future, these materials can also be used to enhance the power generation competence of piezo‐electric energy harvesting systems.…”

Inserting protonated phenanthroline derivatives into the interchain voids of anionic halometallate units to generate hybrid materials with tunable photochromic performance

“…[1][2][3][4][5][6] The combination of inorganic anionic halometallate units and protonated organoamine moieties generates a series of functionalized hybrid halometallates. [1][2][3][4][5][6][7][8][9][10][11][12] Among the various hybrid halometallate materials, hybrid perovskites, particularly those with the general chemical formula [A]PbX 3 (A = protonated amine, X = Cl, Br, I), have been extensively investigated by researchers in numerous devices such as solar cells, ferroelectric memories, and optoelectronic detectors. [13][14][15][16][17][18] The various categories of organoamine, together with the rich coordination mode of halogen ions greatly accelerate the development of hybrid halometallate materials with assorted functionality.…”