Dopant dependent stability of Co n TM+ (TM = Ti, V, Cr, and Mn) clusters

Tung, Ngo Trinh; Janssens, Ewald; Lievens, Peter

doi:10.1007/s00340-013-5549-4

Cited by 8 publications

(2 citation statements)

References 39 publications

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“…The photofragmentation technique used in the current study has been described in detail elsewhere. ,− In brief, cobalt oxide cluster cations Co n O m + are produced in a 10 Hz laser vaporization source coupled to a dual-reflectron high-resolution ( m /Δ m ∼ 4000) time-of-flight mass spectrometer. , The species of interest are mass-selected by a wire-type mass gate . The mass gate is installed at the temporal focal point of the first reflectron, which is located between the first and the second reflectron. , Right after the mass gate, selected clusters are exposed to the third harmonic of a Q-switched Nd:YAG laser (Spectra Physics GCR 150).…”

Section: Experimental Methodsmentioning

confidence: 99%

Photofragmentation Patterns of Cobalt Oxide Cations Co_nO_m⁺ (n = 5–9, m = 4–13): From Oxygen-Deficient to Oxygen-Rich Species

et al. 2020

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Cobalt oxide clusters, Co n O + m (5 ≤ n ≤ 9 and 4 ≤ m ≤ 13), are produced by laser vaporization and studied by time-of-flight mass spectrometry. Specific stoichiometries are mass separated and photofragmented using 355 nm laser light. The preferred fragmentation channels of m = n-1, m = n-2, and m ≥ n species are investigated. Loss of oxygen molecules is the favorable dissociation channel of m ≥ n clusters. While Co n O + n−2 clusters decay via the separation of a Co atom, the photofragmentation behavior of Co n O + n−1 species interestingly can be divided into two regimes: the n ≤ 1 6 clusters tend to lose an oxygen atom, but for n > 6 they favorably dissociate via the loss of a cobalt atom. The geometric structures of selected m = n−2 species are studied using density functional theory calculations. Dissociation energies for different evaporation channels are calculated and thermodynamically favorable channels are found to correspond to the experimental observations.

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Section: Experimental Methodsmentioning

confidence: 99%

Photofragmentation Patterns of Cobalt Oxide Cations Co_nO_m⁺ (n = 5–9, m = 4–13): From Oxygen-Deficient to Oxygen-Rich Species

et al. 2020

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“…For example, thin Cr films are AFM and used for coating tips in scanning tunneling microscopy [37]. In a photofragmentation study, it was shown that Cr doping generally destabilizes the cobalt clusters, with the exception of Co 12 Cr + [38], which is relatively more stable than Co + 13 and likely has an icosahedral structure [23]. We are not aware of dedicated studies dealing with the structure and magnetism of few-atom chromium doped cobalt clusters.…”

Section: Introductionmentioning

confidence: 99%

Structures and magnetic properties of small ${{\rm Co}_{n}^{+}}$ and Co_n−1Cr⁺ (n = 3–5) clusters

Jia¹,

Tol²,

Li³

et al. 2018

J. Phys.: Condens. Matter

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Small cobalt clusters Con + and their single chromium atom doped counterparts Con-1Cr + (n = 3-5) were studied mass spectrometrically by measuring the infrared multiple photon dissociation (IRMPD) spectra of the corresponding argon-tagged complexes. The geometric and electronic structures of the Con + and Con-1Cr + (n = 3-5) clusters as well as their Ar complexes were optimized by density functional theory calculations. The obtained lowest energy structures were confirmed by comparing the IRMPD spectra of ConArm + and Con-1CrArm + (n = 3-5, m = 3 and 4) with the corresponding calculated IR spectra. The calculations reveal that the doped clusters Con-1Cr + retain the geometric structures of the most stable Con + clusters. However, the coupling of the local magnetic moments within the clusters is altered in a size-dependent way: the Cr atom is ferromagnetically coupled in Co2Cr + and Co3Cr + , while it is antiferromagnetically coupled in Co4Cr + .

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(ZnO)42 nanocluster: a novel visibly active magic quantum dot under first principle investigation

et al. 2023

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Dopant dependent stability of Co n TM+ (TM = Ti, V, Cr, and Mn) clusters

Cited by 8 publications

References 39 publications

Photofragmentation Patterns of Cobalt Oxide Cations Co_nO_m⁺ (n = 5–9, m = 4–13): From Oxygen-Deficient to Oxygen-Rich Species

Photofragmentation Patterns of Cobalt Oxide Cations Co_nO_m⁺ (n = 5–9, m = 4–13): From Oxygen-Deficient to Oxygen-Rich Species

Structures and magnetic properties of small ${{\rm Co}_{n}^{+}}$ and Co_n−1Cr⁺ (n = 3–5) clusters

(ZnO)42 nanocluster: a novel visibly active magic quantum dot under first principle investigation

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Dopant dependent stability of Co n TM+ (TM = Ti, V, Cr, and Mn) clusters

Cited by 8 publications

References 39 publications

Photofragmentation Patterns of Cobalt Oxide Cations ConOm+ (n = 5–9, m = 4–13): From Oxygen-Deficient to Oxygen-Rich Species

Photofragmentation Patterns of Cobalt Oxide Cations ConOm+ (n = 5–9, m = 4–13): From Oxygen-Deficient to Oxygen-Rich Species

Structures and magnetic properties of small ${{\rm Co}_{n}^{+}}$ and Co n−1Cr+ (n = 3–5) clusters

(ZnO)42 nanocluster: a novel visibly active magic quantum dot under first principle investigation

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Photofragmentation Patterns of Cobalt Oxide Cations Co_nO_m⁺ (n = 5–9, m = 4–13): From Oxygen-Deficient to Oxygen-Rich Species

Photofragmentation Patterns of Cobalt Oxide Cations Co_nO_m⁺ (n = 5–9, m = 4–13): From Oxygen-Deficient to Oxygen-Rich Species

Structures and magnetic properties of small ${{\rm Co}_{n}^{+}}$ and Co_n−1Cr⁺ (n = 3–5) clusters