Related Experiment Video
Updated: Aug 26, 2025
09:06
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
8.2K
Strain Effects on the Two-Dimensional Cr2N MXene: An Ab Initio Study.
Sandra Julieta Gutiérrez-Ojeda1, Rodrigo Ponce-Pérez1, Daniel Maldonado-Lopez2
1Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Km. 107, Apdo. 14 Carretera Tijuana, Ensenada, Baja California 22800, México.
ACS Omega
|October 3, 2022
Summary
Strain engineering tunable properties of 2D Cr2N MXene. Tensile strain induces a tunable band gap and alters magnetic anisotropy, suggesting spintronic applications.
Area of Science:
- Materials Science
- Condensed Matter Physics
Background:
- Two-dimensional (2D) materials and MXenes offer unique properties.
- Tuning material characteristics via strain is a key research area.
Purpose of the Study:
- Investigate the effects of uniaxial and biaxial strain on the structural, electronic, and magnetic properties of 2D Cr2N MXene.
- Explore potential applications in spintronics.
Main Methods:
- Calculated phonon dispersion and density of states to assess dynamic stability.
- Computed band structure and electron localization function (ELF) to analyze electronic properties.
- Investigated magnetic properties and anisotropy energy under varying strain conditions.
Main Results:
- 2D Cr2N MXene is dynamically stable under applied strain (-5% to 5%).
- Strain influences optical phonon gaps (OPGs), suggesting tunable thermal conductivity.
- Biaxial tensile strain induces a small indirect band gap (0.16 eV) and weakens Cr-N covalent bonding.
- Compressive strain leads to metallic behavior.
- Magnetization alignment and magnetic anisotropy energy are sensitive to Cr atom spacing, favoring out-of-plane spin alignment.
Conclusions:
- Strain engineering significantly modifies the electronic and magnetic properties of 2D Cr2N MXene.
- Tunable band gap and magnetic anisotropy make Cr2N a promising candidate for spintronic devices.
- Growth on substrates with high lattice mismatch is crucial for preserving magnetic properties.
More Related Videos
Related Concept Videos
01:29Three-Dimensional Analysis of Strain
280
Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
280
02:30Stability of Substituted Cyclohexanes
12.8K
This lesson discusses the stability of substituted cyclohexanes with a focus on energies of various conformers and the effect of 1,3-diaxial interactions.
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...
12.8K
02:29Conformations of Cycloalkanes
12.0K
Adolf von Baeyer attempted to explain the instabilities of small and large cycloalkane rings using the concept of angle strain — the strain caused by the deviation of bond angles from the ideal 109.5° tetrahedral value for sp3 hybridized carbons. However, while cyclopropane and cyclobutane are strained, as expected from their highly compressed bond angles, cyclopentane is more strained than predicted, and cyclohexane is virtually strain-free. Hence, Baeyer’s theory that...
12.0K
02:11Conformations of Cyclohexane
12.8K
Cyclohexane does not exist in a planar form due to the high angle and torsional strain it would experience in the planar structure. Instead, it adopts non-planar chair and boat conformations.
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal...
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal...
12.8K
01:15Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
318
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
318
01:18Transformation of Plane Stress
362
Studying stress transformation is essential in understanding how stress components within a material, like a cube under plane stress, change with rotation. This change is analyzed by considering a prismatic element within the cube. As the element rotates, the stress components acting on it—both normal and shearing stresses—change in magnitude and orientation. This change is quantified using trigonometric functions of the rotation angle, relating the forces acting on the rotated element's...
362