Magnetic collapse and low conductivity of Fe3N in the deep interiors of Earth-like planets

Abstract The high-pressure behavior of iron nitrides has garnered significant attention due to the potential of deep nitrogen reservoirs within the Earth’s interior. Here, we investigate the magnetic, structural, electrical, and thermal properties of Fe3N up to 62 GPa and 2100 K, using multiple probes (including synchrotron X-ray diffraction, synchrotron Mössbauer spectroscopy, and electrical measurements) coupled with the diamond-anvil cell technique. Fe3N undergoes a magnetic phase transformation from the ferromagnetic to paramagnetic state at ∼17–20 GPa, 300 K. The equation of state was determined as V0/Z = 42.8(1) Å3, and K0 = 151.8(1) GPa, with K′ fixed at 4. Additionally, Fe3N exhibits unexpectedly low electrical and thermal conductivity under high-pressure and high-temperature conditions. This result suggests that deep nitrogen cycling may contribute to the thermal evolution of the deep interiors of Earth and other terrestrial bodies.

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Publication Details

Journal
American Mineralogist
Published
2024-08-09
DOI
https://doi.org/10.2138/am-2023-9251
Citations
1
Primary Topic
Geomagnetism and Paleomagnetism Studies
Type
article
Field-Weighted Citation Impact
0.23
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Magnetic collapse and low conductivity of Fe3N in the deep interiors of Earth-like planets

Qingyang Hu, Chaojia Lv, Wenli Bi, Yukai Zhuang et al.
1 citations
American Mineralogist
Geomagnetism and Paleomagnetism Studies
0.23
article

Magnetic collapse and low conductivity of Fe3N in the deep interiors of Earth-like planets

Qingyang Hu, Chaojia Lv, Wenli Bi, Yukai Zhuang, Youjun Zhang, Dongzhou Zhang, Gastón Garbarino, Shengcai Zhu, Liangxu Xu, Jin Liu
article en
1 citations

Abstract

Abstract The high-pressure behavior of iron nitrides has garnered significant attention due to the potential of deep nitrogen reservoirs within the Earth’s interior. Here, we investigate the magnetic, structural, electrical, and thermal properties of Fe3N up to 62 GPa and 2100 K, using multiple probes (including synchrotron X-ray diffraction, synchrotron Mössbauer spectroscopy, and electrical measurements) coupled with the diamond-anvil cell technique. Fe3N undergoes a magnetic phase transformation from the ferromagnetic to paramagnetic state at ∼17–20 GPa, 300 K. The equation of state was determined as V0/Z = 42.8(1) Å3, and K0 = 151.8(1) GPa, with K′ fixed at 4. Additionally, Fe3N exhibits unexpectedly low electrical and thermal conductivity under high-pressure and high-temperature conditions. This result suggests that deep nitrogen cycling may contribute to the thermal evolution of the deep interiors of Earth and other terrestrial bodies.

American MineralogistVol. 110(4)
University of Hawaiʻi at Mānoa (US), Sun Yat-sen University (CN), Sichuan University (CN), European Synchrotron Radiation Facility (FR), University of Alabama at Birmingham (US), Yanshan University (CN), Czech Academy of Sciences, Institute of Geophysics (CZ), Center for High Pressure Science and Technology Advanced Research (CN), ORCID (US)
Openalex Percentile: Top 43%
Geomagnetism and Paleomagnetism Studies
0.23
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