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Asakura D, Nanba Y, Okubo M, Mizuno Y, Niwa H, Oshima M, Zhou H, Okada K, Harada Y. Distinguishing between High- and Low-Spin States for Divalent Mn in Mn-Based Prussian Blue Analogue by High-Resolution Soft X-ray Emission Spectroscopy. J Phys Chem Lett 2014; 5:4008-4013. [PMID: 26276486 DOI: 10.1021/jz501738m] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We combine Mn L2,3-edge X-ray absorption, high resolution Mn 2p-3d-2p resonant X-ray emission, and configuration-interaction full-multiplet (CIFM) calculation to analyze the electronic structure of Mn-based Prussian blue analogue. We clarified the Mn 3d energy diagram for the Mn(2+) low-spin state separately from that of the Mn(2+) high-spin state by tuning the excitation energy for the X-ray emission measurement. The obtained X-ray emission spectra are generally reproduced by the CIFM calculation for the Mn(2+) low spin state having a stronger ligand-to-metal charge-transfer effect between Mn t2g and CN π orbitals than the Mn(2+) high spin state. The d-d-excitation peak nearest to the elastic scattering was ascribed to the Mn(2+) LS state by the CIFM calculation, indicating that the Mn(2+) LS state with a hole on the t2g orbital locates near the Fermi level.
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Affiliation(s)
- Daisuke Asakura
- †Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
| | - Yusuke Nanba
- †Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
| | - Masashi Okubo
- †Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
| | - Yoshifumi Mizuno
- †Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
| | - Hideharu Niwa
- ‡Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
- §Synchrotron Radiation Research Organization, The University of Tokyo, Bunkyo-ku, Tokyo 113-8586, Japan
| | - Masaharu Oshima
- §Synchrotron Radiation Research Organization, The University of Tokyo, Bunkyo-ku, Tokyo 113-8586, Japan
| | - Haoshen Zhou
- †Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
| | - Kozo Okada
- ∥The Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
| | - Yoshihisa Harada
- ‡Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
- §Synchrotron Radiation Research Organization, The University of Tokyo, Bunkyo-ku, Tokyo 113-8586, Japan
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Hunt CP, Moskowitz BM, Banerjee SK. Magnetic Properties of Rocks and Minerals. AGU REFERENCE SHELF 2013. [DOI: 10.1029/rf003p0189] [Citation(s) in RCA: 215] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Özdemir Ö, Dunlop DJ. Chemical remanent magnetization during γFeOOH phase transformations. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/92jb02569] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kelso PR, Banerjee SK, Worm HU. The effect of low-temperature hydrothermal alteration on the remanent magnetization of synthetic titanomagnetites: A case for acquisition of chemical remanent magnetization. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/91jb01975] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Li G, Liu M, Kou HZ. Mesoporous α-Fe2O3 nanospheres: structural evolution and investigation of magnetic properties. Chemistry 2011; 17:4323-9. [PMID: 21387429 DOI: 10.1002/chem.201003068] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2010] [Indexed: 11/11/2022]
Abstract
A solvothermal route is adopted to produce mesoporous α-Fe(2)O(3) nanospheres by using polyethylene glycol as soft template and n-butanol/H(2)O as mixed solvent. The mesoporous α-Fe(2)O(3) nanospheres are subjected to calcination at different temperatures, and the specific surface area, pore size, and magnetic properties of the as-prepared nanospheres are investigated. The studies reveal that the pore sizes of the mesoporous α-Fe(2)O(3) nanospheres increase with higher calcination temperature, and high-temperature calcination brings about tightness of the pore wall. Magnetic studies show that aggregation of the small particles raises the Morin transition temperature.
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Affiliation(s)
- Guang Li
- School of Physics and Materials Science, Anhui University, Hefei 230039, PR China.
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Özdemir Ö, Dunlop DJ. Hallmarks of maghemitization in low-temperature remanence cycling of partially oxidized magnetite nanoparticles. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jb006756] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Pan Y, Zhu R, Banerjee SK, Gill J, Williams Q. Rock magnetic properties related to thermal treatment of siderite: Behavior and interpretation. ACTA ACUST UNITED AC 2000. [DOI: 10.1029/1999jb900358] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Heider F, Dunlop DJ, Soffel HC. Low-temperature and alternating field demagnetization of saturation remanence and thermoremanence in magnetite grains (0.037 μm to 5 mm). ACTA ACUST UNITED AC 1992. [DOI: 10.1029/91jb03097] [Citation(s) in RCA: 86] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Beske-Diehl SJ. Magnetization during low-temperature oxidation of seafloor basalts: No large scale chemical remagnetization. ACTA ACUST UNITED AC 1990. [DOI: 10.1029/jb095ib13p21413] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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