2 research outputs found
Two-Dimensional Asymmetric Multiferroics: Unique Way toward Strong Magnetoelectric Coupling and Multistate Memory
Two-dimensional
(2D) materials have provided a fascinating platform
for exploring novel multiferroics and emergent magnetoelectric coupling
mechanisms. Here, a novel 2D asymmetric multiferroic based on Janus
2D multiferroic MXene-analogous oxynitrides (InTlNO2) is
presented by using first-principles calculations. We find three inequivalent
phases for InTlNO2, including two metallic phases (p1 and
p2) and one semiconducting phase (p3) with a band gap of 0.88 eV.
All phases are room-temperature multiferroics with different Curie
temperatures, leading to tunability by phase transitions. We show
that there is a 90° rotation of the magnetic anisotropy easy
axis between p1 and p2, where p1 favors the in-plane and p2 the out-of-plane
easy axis. Therefore, the magnetic anisotropy can be tuned by reversing
the out-of-plane polarization. Our strategy provides a unique way
toward strong magnetoelectric coupling and multistate memory
Two-Dimensional Asymmetric Multiferroics: Unique Way toward Strong Magnetoelectric Coupling and Multistate Memory
Two-dimensional
(2D) materials have provided a fascinating platform
for exploring novel multiferroics and emergent magnetoelectric coupling
mechanisms. Here, a novel 2D asymmetric multiferroic based on Janus
2D multiferroic MXene-analogous oxynitrides (InTlNO2) is
presented by using first-principles calculations. We find three inequivalent
phases for InTlNO2, including two metallic phases (p1 and
p2) and one semiconducting phase (p3) with a band gap of 0.88 eV.
All phases are room-temperature multiferroics with different Curie
temperatures, leading to tunability by phase transitions. We show
that there is a 90° rotation of the magnetic anisotropy easy
axis between p1 and p2, where p1 favors the in-plane and p2 the out-of-plane
easy axis. Therefore, the magnetic anisotropy can be tuned by reversing
the out-of-plane polarization. Our strategy provides a unique way
toward strong magnetoelectric coupling and multistate memory