Magnetism and Piezoelectricity in Stable Transition Metal Silicate Monolayers

Abstract

Two-dimensional van der Waals (2D vdW) materials that display ferromagnetism and piezoelectricity have received increased attention. Despite numerous 2D materials have so far been reported as ferromagnetic, developing an air stable and transferable vdW material that is multiferroic has been challenging. To address this problem, we report our work on layered transition metal silicates that are derivatives of kaolinites and lizardites with transition metal substituting on Al${}^{3+}$ and Mg${}^{2+}$ sites using ab-initio calculations. Using Density Functional Theory (DFT), we show that these compounds are stable under varying O${}_2$ partial pressure and can be synthesized using a surface assisted method. We show that these materials have finite out-of-plane piezoelectric response thanks to the lack of inversion symmetry and also they can be tailored to be ferrimagnetic with a non-zero net moment.

References in corpus (12)

• Van der Waals heterostructures
• 2D materials and van der Waals heterostructures
• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Two-dimensional materials from high-throughput computational exfoliation of experimentally known compounds
• Magnetic 2D materials and heterostructures
• Out-of-plane Piezoelectricity and Ferroelectricity in Layered $\alpha$-In2Se3 Nano-flakes
• Effects of Disorder on Ferromagnetism in Diluted Magnetic Semiconductors
• Van der Waals heterojunction devices based on organohalide perovskites and two-dimensional materials
• Origin of Negative Longitudinal Piezoelectric Effect
• Electronic structure and magnetic properties of pyroxenes (Li,Na)TM(Si,Ge)2O6: novel low-dimensional magnets with 90 bonds
• Computational and experimental investigation of unreported transition metal selenides and sulphides