Observation of magnetic domain patterns with tilted uniaxial anisotropy using a single-spin magnetometer
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-02-28 |
| Journal | Physical review. B./Physical review. B |
| Authors | Cheng Zhi, Chengjie Wang, Bei Ding, Pengfei Wang, Mengqi Wang |
| Institutions | Institute of Physics, University of Science and Technology of China |
| Citations | 2 |
Abstract
Section titled āAbstractāFerromagnets with uniaxial magnetocrystalline anisotropy have been a significant platform to explore applications in magnetic devices. Although it is commonly recognized that the magnetic anisotropy is crucial for the formation of noncollinear domain patterns, the effects of the anisotropy direction are usually neglected in recent studies. Here, we imaged stray fields generated by a polycrystalline MnNiGa sample with a nitrogen-vacancy color center in diamond and found that various stripe domains and magnetic bubbles exist in different regions. These domain patterns could be explained by the difference in anisotropy directions among crystallites via micromagnetic simulation. It can be inferred that the magnetic anisotropy direction plays a key role in energetically favorable domain structures based on our results. The magnetic anisotropy direction may be exploited as an ingredient to modulate domains and develop devices.