Room temperature magnetoelectric coupling in a molecular ferroelectric ytterbium(III) complex

Abstract

Magnetoelectric (ME) materials combine magnetic and electric polarizabilities in the same phase, offering a basis for developing high-density data storage and spintronic or low-consumption devices owing to the possibility of triggering one property with the other. Such applications require strong interaction between the constitutive properties, a criterion that is rarely met in classical inorganic ME materials at room temperature. We provide evidence of a strong ME coupling in a paramagnetic ferroelectric lanthanide coordination complex with magnetostrictive phenomenon. The properties of this molecular material suggest that it may be competitive with inorganic magnetoelectrics.

Asymmetric Ring Opening in a Tetrazine‐Based Ligand Affords a Tetranuclear Opto‐Magnetic Ytterbium Complex

“…Recently, two examples of luminescent Yb‐SMMs with built‐in thermometric capability were published [9, 10] . Furthermore, a molecular ferroelectric Yb 3+ complex possessing room temperature magnetoelectric coupling, a rarity for molecular compounds, was reported recently by Long and co‐workers [11] . These studies highlight the potential of Yb 3+ in the development of next‐generation multifunctional coordination compounds.…”

New Luminescent Tetranuclear Lanthanide‐Based Silsesquioxane Cage‐Like Architectures

“…Surprisingly, the number of works devoted to the design of CLMSs involving lanthanide ions are relatively scarce despite the great interest to their employment in molecule‐based materials. Indeed, lanthanide‐based complexes of different nuclearity and their extended structures saw a huge development in the recent years owing to exceptional magnetic and optical properties allowing an emergence or progress of interesting physical phenomena and related applications including a high temperature slow relaxation of the magnetization in mononuclear lanthanide Single Molecule Magnets, [8] lanthanide‐based luminescence, [9] magnetoelectric materials, [10] luminescent thermometry, [11] optical labelling, [12] Magneto Resonance Imaging, [13] catalysis [14] and others. However, to the best of our knowledge, only two families of lanthanide‐based CLMSs have been reported in the literatures up to now.…”

Wafer‐Scale Diisopropylammonium Bromide Films for Low‐Power Lateral Organic Ferroelectric Capacitors

“…Inorganic ferroelectric materials, [ 1 ] due to their unique bistable polarization states, have been ubiquitously used in data storage devices, [ 1a ] optical switching, [ 2 ] actuators, [ 3 ] sensors, [ 4 ] and energy harvesters [ 5 ] among others applications. [ 6 ] However, such materials, including lead zirconate titanate (PZT), strontium bismuth tantalate (SBT), and bismuth titanate (BTO), [ 7 ] contain heavy metals which cannot only be deleterious for the environment, but can also be toxic. Moreover, they are difficult to integrate with modern semiconductor processes [ 1c ] and are also incompatible with the emerging flexible/wearable electronics.…”

“…The E c of typical organic ferroelectrics, i.e., polyvinylidene fluoride (PVDF) and its copolymer polyvinylidene fluoride‐trifluoroethylene (P(VDF‐TrFE)), [ 9 ] can be over 500 kV cm −1 with P s around 10 µC cm −2 which usually leads to a large driving voltage. Moreover, the inability of solution processing of some polymer ferroelectric thin films [ 6b ] also impedes its applications.…”

“…[ 19 ] Here, J and ν denote current density and sweeping rate of the voltage V , respectively. Noticeably, the remnant polarization P r can achieve ≈13 µC cm −2 , the largest to date for any organic ferroelectric thin film devices including molecular [ 10e ] and polymer devices (such as PVDF, [ 20 ] P(VDF‐TrFE), [ 21 ] Nylon‐5 and Nylon‐11 [ 6b ] capacitors). In addition, the E c of ≈5 kV cm −1 is two to three orders of magnitude smaller than those of the polymer ferroelectric devices (see Table S1, Supporting Information).…”