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Ohta K, Suehiro S, Kawaguchi SI, Okuda Y, Wakamatsu T, Hirose K, Ohishi Y, Kodama M, Hirai S, Azuma S. Measuring the Electrical Resistivity of Liquid Iron to 1.4 Mbar. PHYSICAL REVIEW LETTERS 2023; 130:266301. [PMID: 37450814 DOI: 10.1103/physrevlett.130.266301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 05/04/2023] [Indexed: 07/18/2023]
Abstract
We determined the electrical resistivity of liquid Fe to 135 GPa and 6680 K using a four-probe method in a diamond-anvil cell combined with two novel techniques: (i) enclosing a molten Fe in a sapphire capsule, and (ii) millisecond time-resolved simultaneous measurements of the resistance, x-ray diffraction, and temperature of instantaneously melted Fe. Our results show the minimal temperature dependence of the resistivity of liquid Fe and its anomalous resistivity decrease around 50 GPa, likely associated with a gradual magnetic transition, both in agreement with previous ab initio calculations.
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Affiliation(s)
- Kenji Ohta
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Sho Suehiro
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Saori I Kawaguchi
- Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo 679-5198, Japan
| | - Yoshiyuki Okuda
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Tatsuya Wakamatsu
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Kei Hirose
- Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
- Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Yasuo Ohishi
- Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo 679-5198, Japan
| | - Manabu Kodama
- Department of Mechanical Engineering, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Shuichiro Hirai
- Department of Mechanical Engineering, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Shintaro Azuma
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan
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Balédent V, Nataf L, Rueff JP. Exceptionally robust magnetism and structure of SrFeO[Formula: see text] above 100 GPa. Sci Rep 2022; 12:16018. [PMID: 36163401 PMCID: PMC9512897 DOI: 10.1038/s41598-022-20192-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 09/09/2022] [Indexed: 11/25/2022] Open
Abstract
We report the exceptional structural and magnetic stability of SrFeO[Formula: see text] under pressure by X-Ray Magnetic Circular Dichroism (XMCD) and X-ray Diffraction (XRD) up to the Mbar range. The XMCD data confirm the onset of ferromagnetism above 30 GPa and its stability up to 102 GPa while XRD shows that SrFeO[Formula: see text] structure remains unchanged from 30 GPa up to 111 GPa without any sign of structural transition. Our results demonstrate the robustness of Fe properties under extreme conditions in the square planar environment.
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Affiliation(s)
- V. Balédent
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, 91405 Orsay, France
| | - L. Nataf
- Synchrotron SOLEIL, L’Orme des Merisiers, BP 48 St Aubin, 91192 Gif-sur-Yvette, France
| | - J.-P. Rueff
- Synchrotron SOLEIL, L’Orme des Merisiers, BP 48 St Aubin, 91192 Gif-sur-Yvette, France
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique–Matière et Rayonnement, LCPMR, 75005 Paris, France
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Lesik M, Plisson T, Toraille L, Renaud J, Occelli F, Schmidt M, Salord O, Delobbe A, Debuisschert T, Rondin L, Loubeyre P, Roch JF. Magnetic measurements on micrometer-sized samples under high pressure using designed NV centers. Science 2019; 366:1359-1362. [DOI: 10.1126/science.aaw4329] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 11/06/2019] [Indexed: 01/24/2023]
Abstract
Pressure can be used to tune the interplay among structural, electronic, and magnetic interactions in materials. High pressures are usually applied in the diamond anvil cell, making it difficult to study the magnetic properties of a micrometer-sized sample. We report a method for spatially resolved optical magnetometry based on imaging a layer of nitrogen-vacancy (NV) centers created at the surface of a diamond anvil. We illustrate the method using two sets of measurements realized at room temperature and low temperature, respectively: the pressure evolution of the magnetization of an iron bead up to 30 gigapascals showing the iron ferromagnetic collapse and the detection of the superconducting transition of magnesium dibromide at 7 gigapascals.
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Affiliation(s)
- Margarita Lesik
- Laboratoire Aimé Cotton, CNRS, Univ. Paris-Sud, ENS Paris-Saclay, Université Paris-Saclay, 91405 Orsay Cedex, France
| | | | - Loïc Toraille
- Laboratoire Aimé Cotton, CNRS, Univ. Paris-Sud, ENS Paris-Saclay, Université Paris-Saclay, 91405 Orsay Cedex, France
| | | | | | - Martin Schmidt
- Laboratoire Aimé Cotton, CNRS, Univ. Paris-Sud, ENS Paris-Saclay, Université Paris-Saclay, 91405 Orsay Cedex, France
| | | | | | | | - Loïc Rondin
- Laboratoire Aimé Cotton, CNRS, Univ. Paris-Sud, ENS Paris-Saclay, Université Paris-Saclay, 91405 Orsay Cedex, France
| | | | - Jean-François Roch
- Laboratoire Aimé Cotton, CNRS, Univ. Paris-Sud, ENS Paris-Saclay, Université Paris-Saclay, 91405 Orsay Cedex, France
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