A thin film of europium titanate stretched across a dysprosium scandate substrate is the strongest simultaneously ferroelectric and ferromagnetic material made since the first, nickel boracites, were discovered in 1966. Materials that are at once ferroelectric and ferromagnetic could be useful in developing highly sensitive magnetic memory, magnetic sensors or microwave-based devices. The new material, discovered by a team at Cornell University, is one thousand times as powerful at 4 Kelvin, than its nickel predecessor, the team reports in the journal Nature recently. The new material, which exploits spin-lattice coupling, is at least 1000 times stronger than the nickel compound, and was synthesized based on theoretical studies to find an appropriate elemental combination.
Two-faced memory material