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Title: Magnetic imaging and statistical analysis of the metamagnetic phase transition of FeRh with electron spins in diamond

Abstract

Magnetic imaging based on nitrogen-vacancy (NV) centers in diamond has emerged as a powerful tool for probing magnetic phenomena in fields ranging from biology to physics. A key strength of NV sensing is its local-probe nature, enabling high-resolution spatial images of magnetic stray fields emanating from a sample. However, this local character can also form a drawback for analyzing the global properties of a system, such as a phase transition temperature. Here, we address this challenge by using statistical analyses of magnetic-field maps to characterize the first-order temperature-driven metamagnetic phase transition from the antiferromagnetic to the ferromagnetic state in FeRh. After imaging the phase transition and identifying the regimes of nucleation, growth, and coalescence of ferromagnetic domains, we statistically characterize the spatial magnetic-field maps to extract the transition temperature and thermal hysteresis width. By analyzing the spatial correlations of the maps in relation to the magnetocrystalline anisotropy and external magnetic field, we detect a reorientation of domain walls across the phase transition. The employed statistical approach can be extended to the study of other magnetic phenomena with NV magnetometry or other sensing techniques.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [1]
  1. Delft Univ. of Technology (Netherlands). Kavli Inst. of Nanoscience. Dept. of Quantum Nanoscience
  2. Delft Univ. of Technology (Netherlands). Kavli Inst. of Nanoscience. Dept. of Quantum Nanoscience; Leiden Univ. (Netherlands). Huygens-Kamerlingh Onnes Laboratorium
  3. Univ. of California, San Diego, CA (United States). Center for Memory and Recording Research
Publication Date:
Research Org.:
Univ. of California, San Diego, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Dutch Research Council (NWO)
OSTI Identifier:
1850831
Alternate Identifier(s):
OSTI ID: 1787125
Grant/Contract Number:  
SC0003678; 680.91.115
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 129; Journal Issue: 22; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; thin films; thermal effects; photoluminescence; electron paramagnetic resonance spectroscopy; ferromagnetism; Zeeman effect; phase transitions; magnetic anisotropy; magnetic ordering

Citation Formats

Nava Antonio, Guillermo, Bertelli, Iacopo, Simon, Brecht G., Medapalli, Rajasekhar, Afanasiev, Dmytro, and van der Sar, Toeno. Magnetic imaging and statistical analysis of the metamagnetic phase transition of FeRh with electron spins in diamond. United States: N. p., 2021. Web. doi:10.1063/5.0051791.
Nava Antonio, Guillermo, Bertelli, Iacopo, Simon, Brecht G., Medapalli, Rajasekhar, Afanasiev, Dmytro, & van der Sar, Toeno. Magnetic imaging and statistical analysis of the metamagnetic phase transition of FeRh with electron spins in diamond. United States. https://doi.org/10.1063/5.0051791
Nava Antonio, Guillermo, Bertelli, Iacopo, Simon, Brecht G., Medapalli, Rajasekhar, Afanasiev, Dmytro, and van der Sar, Toeno. Tue . "Magnetic imaging and statistical analysis of the metamagnetic phase transition of FeRh with electron spins in diamond". United States. https://doi.org/10.1063/5.0051791. https://www.osti.gov/servlets/purl/1850831.
@article{osti_1850831,
title = {Magnetic imaging and statistical analysis of the metamagnetic phase transition of FeRh with electron spins in diamond},
author = {Nava Antonio, Guillermo and Bertelli, Iacopo and Simon, Brecht G. and Medapalli, Rajasekhar and Afanasiev, Dmytro and van der Sar, Toeno},
abstractNote = {Magnetic imaging based on nitrogen-vacancy (NV) centers in diamond has emerged as a powerful tool for probing magnetic phenomena in fields ranging from biology to physics. A key strength of NV sensing is its local-probe nature, enabling high-resolution spatial images of magnetic stray fields emanating from a sample. However, this local character can also form a drawback for analyzing the global properties of a system, such as a phase transition temperature. Here, we address this challenge by using statistical analyses of magnetic-field maps to characterize the first-order temperature-driven metamagnetic phase transition from the antiferromagnetic to the ferromagnetic state in FeRh. After imaging the phase transition and identifying the regimes of nucleation, growth, and coalescence of ferromagnetic domains, we statistically characterize the spatial magnetic-field maps to extract the transition temperature and thermal hysteresis width. By analyzing the spatial correlations of the maps in relation to the magnetocrystalline anisotropy and external magnetic field, we detect a reorientation of domain walls across the phase transition. The employed statistical approach can be extended to the study of other magnetic phenomena with NV magnetometry or other sensing techniques.},
doi = {10.1063/5.0051791},
journal = {Journal of Applied Physics},
number = 22,
volume = 129,
place = {United States},
year = {Tue Jun 08 00:00:00 EDT 2021},
month = {Tue Jun 08 00:00:00 EDT 2021}
}

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