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Jose GC, Xie W, Lavina B, Zhao J, Alp EE, Zhang D, Bi W. Robust magnetism and crystal structure in Dirac semimetal EuMnBi 2under high pressure. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:255802. [PMID: 38534017 DOI: 10.1088/1361-648x/ad3473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 03/15/2024] [Indexed: 03/28/2024]
Abstract
Dirac materials offer exciting opportunities to explore low-energy carrier dynamics and novel physical phenomena, especially their interaction with magnetism. In this context, this work focuses on studies of pressure control on the magnetic state of EuMnBi2, a representative magnetic Dirac semimetal, through time-domain synchrotron Mössbauer spectroscopy in151Eu. Contrary to the previous report that the antiferromagnetic order is suppressed by pressure above 4 GPa, we have observed robust magnetic order up to 33.1 GPa. Synchrotron-based x-ray diffraction experiment on a pure EuMnBi2sample shows that the tetragonal crystal lattice remains stable up to at least 31.7 GPa.
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Affiliation(s)
- Greeshma C Jose
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America
| | - Weiwei Xie
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, United States of America
| | - Barbara Lavina
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, United States of America
- Center for Advanced Radiation Sources, The University of Chicago, Chicago, IL 60637, United States of America
| | - Jiyong Zhao
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, United States of America
| | - Esen E Alp
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, United States of America
| | - Dongzhou Zhang
- Hawaii Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI 96822, United States of America
| | - Wenli Bi
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America
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Nix Z, Zhao J, Alp EE, Xiao Y, Zhang D, Cao GH, Vohra YK, Bi W. Pressure effect on magnetism and valence in ferromagnetic superconductor Eu(Fe 0.75Ru 0.25) 2As 2. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:415601. [PMID: 35896102 DOI: 10.1088/1361-648x/ac84bb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
Eu(Fe0.75Ru0.25)2As2is an intriguing system with unusual coexistence of superconductivity and ferromagnetism, providing a unique platform to study the nature of such coexistence. To establish a magnetic phase diagram, time-domain synchrotron Mössbauer experiments in151Eu have been performed on a single crystalline Eu(Fe0.75Ru0.25)2As2sample under hydrostatic pressures and at low temperatures. Upon compression the magnetic ordering temperature increases sharply from 20 K at ambient pressure, reaching ∼49 K at 10.1 GPa. With further compression, the magnetic order is suppressed and eventually collapses. Isomer shift values from Mössbauer measurements and x-ray absorption spectroscopy data at EuL3edge show that pressure drives Eu ions to a homogeneous intermediate valence state with mean valence of ∼2.4 at 27.4 GPa, possibly responsible for the suppression of magnetism. Synchrotron powder x-ray diffraction experiment reveals a tetragonal to collapsed-tetragonal structural transition around 5 GPa, a lower transition pressure than in the parent compound. These results provide guidance to further work investigating the interplay of superconductivity and magnetism.
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Affiliation(s)
- Zachary Nix
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America
| | - Jiyong Zhao
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, United States of America
| | - Esen E Alp
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, United States of America
| | - Yuming Xiao
- HPCAT, X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, United States of America
| | - Dongzhou Zhang
- Hawaii Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI 96822, United States of America
| | - Guang-Han Cao
- School of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Yogesh K Vohra
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America
| | - Wenli Bi
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America
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Abstract
High-entropy alloys are a new type of material developed in recent years. It breaks the traditional alloy-design conventions and has many excellent properties. High-pressure treatment is an effective means to change the structures and properties of metal materials. The pressure can effectively vary the distance and interaction between molecules or atoms, so as to change the bonding mode, and form high-pressure phases. These new material states often have different structures and characteristics, compared to untreated metal materials. At present, high-pressure technology is an effective method to prepare alloys with unique properties, and there are many techniques that can achieve high pressures. The most commonly used methods include high-pressure torsion, large cavity presses and diamond-anvil-cell presses. The materials show many unique properties under high pressures which do not exist under normal conditions, providing a new approach for the in-depth study of materials. In this paper, high-pressure (HP) technologies applied to high-entropy alloys (HEAs) are reviewed, and some possible ways to develop good properties of HEAs using HP as fabrication are introduced. Moreover, the studies of HEAs under high pressures are summarized, in order to deepen the basic understanding of HEAs under high pressures, which provides the theoretical basis for the application of high-entropy alloys.
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Kantor I, Marini C, Mathon O, Pascarelli S. A laser heating facility for energy-dispersive X-ray absorption spectroscopy. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:013111. [PMID: 29390671 DOI: 10.1063/1.5010345] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A double-sided laser heating setup for diamond anvil cells installed on the ID24 beamline of the ESRF is presented here. The setup geometry is specially adopted for the needs of energy-dispersive X-ray absorption spectroscopic (XAS) studies of materials under extreme pressure and temperature conditions. We illustrate the performance of the facility with a study on metallic nickel at 60 GPa. The XAS data provide the temperature of the melting onset and quantitative information on the structural parameters of the first coordination shell in the hot solid up to melting.
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Affiliation(s)
- I Kantor
- ESRF-The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - C Marini
- ESRF-The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - O Mathon
- ESRF-The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - S Pascarelli
- ESRF-The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
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Gee LB, Lin CY, Jenney FE, Adams MW, Yoda Y, Masuda R, Saito M, Kobayashi Y, Tamasaku K, Lerche M, Seto M, Riordan CG, Ploskonka A, Power PP, Cramer SP, Lauterbach L. Synchrotron-based Nickel Mössbauer Spectroscopy. Inorg Chem 2016; 55:6866-72. [PMID: 27387959 PMCID: PMC6813798 DOI: 10.1021/acs.inorgchem.5b03004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We used a novel experimental setup to conduct the first synchrotron-based (61)Ni Mössbauer spectroscopy measurements in the energy domain on Ni coordination complexes and metalloproteins. A representative set of samples was chosen to demonstrate the potential of this approach. (61)NiCr2O4 was examined as a case with strong Zeeman splittings. Simulations of the spectra yielded an internal magnetic field of 44.6 T, consistent with previous work by the traditional (61)Ni Mössbauer approach with a radioactive source. A linear Ni amido complex, (61)Ni{N(SiMe3)Dipp}2, where Dipp = C6H3-2,6-(i)Pr2, was chosen as a sample with an "extreme" geometry and large quadrupole splitting. Finally, to demonstrate the feasibility of metalloprotein studies using synchrotron-based (61)Ni Mössbauer spectroscopy, we examined the spectra of (61)Ni-substituted rubredoxin in reduced and oxidized forms, along with [Et4N]2[(61)Ni(SPh)4] as a model compound. For each of the above samples, a reasonable spectrum could be obtained in ∼1 d. Given that there is still room for considerable improvement in experimental sensitivity, synchrotron-based (61)Ni Mössbauer spectroscopy appears to be a promising alternative to measurements with radioactive sources.
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Affiliation(s)
- Leland B. Gee
- Department of Chemistry, University of California, Davis, CA, 95616, USA
| | - Chun-Yi Lin
- Department of Chemistry, University of California, Davis, CA, 95616, USA
| | - Francis E. Jenney
- Georgia Campus, Philadelphia College of Osteopathic Medicine, Suwanee, GA, 30024, USA
| | - Michael W.W. Adams
- Georgia Campus, Philadelphia College of Osteopathic Medicine, Suwanee, GA, 30024, USA
| | - Yoshitaka Yoda
- Research and Utilization Division JASRI/SPring-8, 1-1-1 Kouto, Sayo-gun, Hyogo 679-5198, Japan
| | - Ryo Masuda
- Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Makina Saito
- Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Yasuhiro Kobayashi
- Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Kenji Tamasaku
- SR Material Science Inst. Unit, RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo, 679-5148, Japan
| | - Michael Lerche
- Department of Chemistry, University of California, Davis, CA, 95616, USA
| | - Makoto Seto
- Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
- Japan Atomic Energy Agency, Mikazuki-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Charles G. Riordan
- Department of Chemistry & Biochemistry, University of Delaware, Newark, DE 19716 USA
| | - Ann Ploskonka
- Department of Chemistry & Biochemistry, University of Delaware, Newark, DE 19716 USA
| | - Philip P. Power
- Department of Chemistry, University of California, Davis, CA, 95616, USA
| | - Stephen P. Cramer
- Department of Chemistry, University of California, Davis, CA, 95616, USA
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
| | - Lars Lauterbach
- Department of Chemistry, University of California, Davis, CA, 95616, USA
- Department of Chemistry, Technische Universtät Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany
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Masuda R, Kobayashi Y, Kitao S, Kurokuzu M, Saito M, Yoda Y, Mitsui T, Hosoi K, Kobayashi H, Kitagawa H, Seto M. 61Ni synchrotron radiation-based Mössbauer spectroscopy of nickel-based nanoparticles with hexagonal structure. Sci Rep 2016; 6:20861. [PMID: 26883185 PMCID: PMC4756403 DOI: 10.1038/srep20861] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 01/08/2016] [Indexed: 11/30/2022] Open
Abstract
We measured the synchrotron-radiation (SR)-based Mössbauer spectra of Ni-based nanoparticles with a hexagonal structure that were synthesised by chemical reduction. To obtain Mössbauer spectra of the nanoparticles without 61Ni enrichment, we developed a measurement system for 61Ni SR-based Mössbauer absorption spectroscopy without X-ray windows between the 61Ni84V16 standard energy alloy and detector. The counting rate of the 61Ni nuclear resonant scattering in the system was enhanced by the detection of internal conversion electrons and the close proximity between the energy standard and the detector. The spectrum measured at 4 K revealed the internal magnetic field of the nanoparticles was 3.4 ± 0.9 T, corresponding to a Ni atomic magnetic moment of 0.3 Bohr magneton. This differs from the value of Ni3C and the theoretically predicted value of hexagonal-close-packed (hcp)-Ni and suggested the nanoparticle possessed intermediate carbon content between hcp-Ni and Ni3C of approximately 10 atomic % of Ni. The improved 61Ni Mössbauer absorption measurement system is also applicable to various Ni materials without 61Ni enrichment, such as Ni hydride nanoparticles.
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Affiliation(s)
- Ryo Masuda
- Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Yasuhiro Kobayashi
- Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Shinji Kitao
- Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Masayuki Kurokuzu
- Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Makina Saito
- Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
| | - Yoshitaka Yoda
- Research and Utilization Division, Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Takaya Mitsui
- Condensed Matter Science Division, Sector of Nuclear Science Research, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Kohei Hosoi
- Department of Chemistry, Faculty of Science, Kyushu University, 6-10-1, Hakozaki, Fukuoka 812-8581, Japan
| | - Hirokazu Kobayashi
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hiroshi Kitagawa
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Makoto Seto
- Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan.,Condensed Matter Science Division, Sector of Nuclear Science Research, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
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Torchio R, Mathon O, Pascarelli S. XAS and XMCD spectroscopies to study matter at high pressure: Probing the correlation between structure and magnetism in the 3d metals. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.02.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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