Mössbauer studies on laser evaporated iron atoms and their reactions with oxygen in argon matrices

Yamada, Yasuhiro; Sumino, Hirochika; Okamura, Yukako; Shimasaki, Hideo; Tominaga, T.

doi:10.1016/s0969-8043(99)00128-1

Cited by 31 publications

(37 citation statements)

References 25 publications

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“…[1][2][3][4][5][6][7][8][9][10][11] The FeO 2 molecules in the form of oxo, peroxo, and superoxo were proposed to be reaction products between the iron atom and molecular oxygen in solid matrixes. [12][13][14][15][16] However, gas phase investigations indicate that ground-state iron atoms are unreactive toward dioxygen at room temperature. 17,18 Anion photoelectron spectroscopic investigation also indicates that only the inserted OFeO structure was observed.…”

Section: Introductionmentioning

confidence: 99%

Formation and Characterization of Two FeO₃ Isomers in Solid Argon

Gong

Zhou

2008

J. Phys. Chem. A

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Two FeO 3 isomers were prepared and characterized using matrix isolation infrared spectroscopy and theoretical calculations. The iron monoxide molecules produced from laser evaporation of the bulk iron oxide target react with dioxygen in solid argon to form the (eta (2)-O 2)FeO complex spontaneously on annealing. The (eta (2)-O 2)FeO complex was predicted to have a (5)B 2 ground state with a planar C 2 v structure, in which the O 2 fragment is side-on bonded to the iron center. The (eta (2)-O 2)FeO complex rearranges to the more stable iron trioxide isomer upon visible light (lambda > 500 nm) irradiation. The iron trioxide molecule was predicted to have a closed-shell singlet ground state with a planar D 3 h symmetry, in which the iron possesses a +6 oxidation state.

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Section: Introductionmentioning

confidence: 99%

Formation and Characterization of Two FeO₃ Isomers in Solid Argon

Gong

Zhou

2008

J. Phys. Chem. A

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“…It was found, however, that these two lines did not vanish up to 40 K above the Né el temperature (õ30 K) of the a-phase. Therefore the in-beam Mö ssbauer spectra obtained in this study were analyzed with no magnetic interaction but a combination of paramagnetic doublets, referred to the previous experiment of the Ar matrix isolation of laser-ablated Fe atoms and the reaction products with O 2 gas at low temperatures by means of Mö ssbauer and infrared spectroscopic studies [2].…”

Section: Resultsmentioning

confidence: 99%

Reactions of 57Mn implanted into solid oxygen

et al. 2006

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“…and translational energies), clusters, and particles; (4) the heat radiation of laserevaporation is small; (5) pulsed-laser-ablation enables control of the deposition rate and reduction of the pump size of a vessel; and (6) the experimental setup for laser-evaporation is simple and can be combined with various equipment in a small space. These characteristics are interesting considering the chemical reactions of laser-evaporated atoms producing novel species in gas-phase and the production of various films while controlling their chemical compositions and physical properties by laser deposition.…”

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confidence: 99%

“…Mössbauer spectroscopy provides direct information on the electronic and magnetic properties of iron-based substances and is powerful tool for the study of the reaction of Fe atoms and the nature of films. We have reported Mössbauer spectra of novel species produced in gas-phase with the aid of a matrix-isolation technique [1][2][3][4], and iron oxide species were found [5]. We also reported the reactions of laser-evaporated iron atoms with solid oxygen [6].…”

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Reaction and deposition of laser-evaporated iron

et al. 2008

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Reaction of laser-evaporated iron atom was investigated by Mössbauer spectroscopy and was applied for the production of films. Iron oxide films were produced by laser-deposition of Fe metal and hematite solid onto Al substrates, and the compositions of the films changed depending on the pressure of the O 2 atmosphere and the temperature of the substrates. The spin orientations of α-Fe films deposited by three types of deposition methods were compared. The nuclear spin of iron films produced by deposition of Fe atoms vaporized by resistive heating was perpendicular to the substrate surface, while that of films produced by laserdeposition of Fe was parallel to the substrate surface. The nuclear spins of iron films produced using an arc-plasma-gun were linear orientations along nanometer-sized grooves on the Al substrate surface.

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Mössbauer studies on laser evaporated iron atoms and their reactions with oxygen in argon matrices

Cited by 31 publications

References 25 publications

Formation and Characterization of Two FeO₃ Isomers in Solid Argon

Formation and Characterization of Two FeO₃ Isomers in Solid Argon

Reactions of 57Mn implanted into solid oxygen

Reaction and deposition of laser-evaporated iron

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Mössbauer studies on laser evaporated iron atoms and their reactions with oxygen in argon matrices

Cited by 31 publications

References 25 publications

Formation and Characterization of Two FeO3 Isomers in Solid Argon

Formation and Characterization of Two FeO3 Isomers in Solid Argon

Reactions of 57Mn implanted into solid oxygen

Reaction and deposition of laser-evaporated iron

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About

Formation and Characterization of Two FeO₃ Isomers in Solid Argon

Formation and Characterization of Two FeO₃ Isomers in Solid Argon