A unique and discrete Ce(iii) macrocyclic complex exhibits ferroelectric, dielectric, and slow relaxation of magnetization properties

Abstract

A discrete [Ce(L1)(NO3)3] (1; L1 = macrocyclic Schiff base ligand) complex exhibits both ferroelectricity and magnetic bistability together, which is extremely rare and challenging to achieve. The presence of the...

Discrete Molecular Copper(II) Complex for Efficient Piezoelectric Energy Harvesting Above Room‐Temperature

“…organic–inorganic perovskites ( T c =406 K), [17] metal‐free 3‐dimensional perovskites ( T c =448 K) [18] and a Zn−Yb molecular ferroelectrics ( T c =550 K) [19] . While the P s and P r value (at 333 K) observed for 1 is relatively larger than certain lanthanide/organic molecular ferroelectrics [15, 19–25] …”

Deciphering the anisotropic energy harvesting responses of an above room temperature molecular ferroelectric copper(ii) complex single crystal

“…1d), which are relatively high compared to many of the reported molecular ferroelectrics. [14][15][16] In the crystal lattice of 1, along the b-axis the molecules (cations and anions) are related by the 2 1 screw axis symmetry, while such a crystallographically imposed symmetry is not found along the a-and c-axes. Hence, along the b-axis, the dipole alignment and various supramolecular interactions (like hydrogen bonding, p-p interactions, anion-p interactions, CH-p interactions) are stronger compared to those along the other two axes (resulting in low P s values along the a and c-axes).…”

Discrete Molecular Copper(II) Complex for Efficient Piezoelectric Energy Harvesting Above Room‐Temperature

“…organic–inorganic perovskites ( T c =406 K), [17] metal‐free 3‐dimensional perovskites ( T c =448 K) [18] and a Zn−Yb molecular ferroelectrics ( T c =550 K) [19] . While the P s and P r value (at 333 K) observed for 1 is relatively larger than certain lanthanide/organic molecular ferroelectrics [15, 19–25] …”

“…[19] While the P s and P r value (at 333 K) observed for 1 is relatively larger than certain lanthanide/ organic molecular ferroelectrics. [15,[19][20][21][22][23][24][25] Further, we performed piezo-response force microscopy (PFM) on a pure single crystal of size 0.15 × 0.27 × 0.50 mm 3 (Figure S11, Supporting Information) at room temperature. The vertical and lateral PFM (vector PFM) images clearly depict the orientation of different domains present in the system (Figures 2c-f).…”