Crystal and Magnetic Structures in Layered, Transition Metal Dihalides and Trihalides

By M. McGuire. 2017

419 citations recorded by the source corpus.

Materials composed of two dimensional layers bonded to one another through weak van der Waals interactions often exhibit strongly anisotropic behaviors and can be cleaved into very thin specimens and sometimes into monolayer crystals. Interest in such materials is driven by the study of low dimensional physics and the design of functional heterostructures. Binary compounds with the compositions M X 2 and M X 3 where M is a metal cation and X is a halogen anion often form such structures. Magnetism can be incorporated by choosing a transition metal with a partially filled d-shell for M, enabling ferroic responses for enhanced functionality. Here a brief overview of binary transition metal dihalides and trihalides is given, summarizing their crystallographic properties and long-range-ordered magnetic structures, focusing on those materials with layered crystal structures and partially filled d-shells required for combining low dimensionality and cleavability with magnetism.

Subfields: Inorganic Chemistry, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/275521e05a96b9cbc762dc3daf93c6198b037765

Citations in the corpus

• Magnetism, symmetry and spin transport in van der Waals layered systems (2021, neutral): “7c. Bi-layer CrI 3 also exhibits a linear magneto-electric effect due to their magnetic point group with broken spatial-inversion and time-reversal symmetries 70,105–107 .”
• Two-dimensional magnetic crystals and emergent heterostructure devices (2019, neutral): “antiferromagnetic or helimagnetic (142).”
• Probing and controlling magnetic states in 2D layered magnetic materials (2019, neutral): “Due to the competition between in-plane FM and AF exchange, several layered magnetic materi als develop a helimagnetic ground state, in which spins of neighbouring sites within a monolayer arrange themselves in a helical pattern 31 .”