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Kznf3:cr

WebFeb 1, 1984 · The KZnF3: Cr3+ crystal was optically pumped with the cw laser lines of a … WebThe influence of an external axial electric field on the absorption spectrum of a Cr3+−Cr2+ mixed-valence pair center coupled by the double-exchange mechanism in a KZnF3 crystal is investigated. It is shown experimentally that the Cr3+−Cr2+ pair has an electric dipole moment. The migration of an electron is accompanied by local lattice strain. At the …

Simultaneous size and luminescence control of KZnF3:Yb3+/Er3

WebAug 1, 2005 · Specifics of the exchange interaction in mixed-valence Cr 2+ –Cr 3+ 3 d -ion pairs in KZnF 3 crystals are studied. It is shown that the double-exchange interaction can be significantly reduced by the low-symmetry crystal field created by a compensator. The features of the exchange interaction and optical absorption spectra are qualitatively … WebAug 1, 1980 · KZnF3 crystallizes in the cubic perovskite type system with the space group Pm3m. Starting materials were KF and ZnCl2 (Merck). KF was dried at 400 under a iO~ Torr vacuum to eliminate Water and hydrofluorhydric acid. First, ZnCl2 was also dried at 200 under a iO~ Torr vacuum and transformed in ZnF2 under an hydro- fluorhydric acid gas … エアロロノア 親 https://groupe-visite.com

Charge compensation and the luminescence of Cr 3+ in KMgF3

WebMar 20, 2024 · In a ideal unit cell of perovskite K M n F X 3 (closed packed with purely ionic bondings), calculate the unit cell length: radius: K = 1.7 F = 1.2 M n = 0.8. The structure. WebDec 23, 2024 · Benefitting from the low phonon energy and relatively weak electron … エアロロノア 馬

Optical studies of Cr3+–Cr2+ pair center in KZnF3 crystal

Category:Optical studies of the uniaxial stress-induced orbital alignment of the Cr

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Kznf3:cr

Luminescent Cr3+ centres in KZnF3: an investigation of the …

WebApr 15, 2024 · The measurement results demonstrate that Cr3+ and … WebFeb 1, 1984 · Abstract. Pulsed laser operation at room temperature and cw laser output …

Kznf3:cr

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WebPHYSICAL REVIEW B VOLUI4fE 38, NUMBER 5 15 AUGUST 1988-I Dynamical Jahn-Teller effect and fluorescence line narrowing of the A 2-Tz zero-phonon transition in KZnF3:Cr O. Pilla, E.Galvanetto, M. Montagna, and G. Viliani Dipartimento di Fisica, Universita di Trento, 38050 Povo, Trento, Italy (Received 11 December 1987;revised manuscript received 24 … WebOct 14, 2015 · Transparent bulk glass-ceramics containing ZnF2, K2SiF6, and KZnF3 nanocrystals are successfully obtained from xKF-xZnF2- (100 - 2x)SiO2 oxyfluoride glasses for the first time to the best of our knowledge.

WebDec 1, 2003 · In this paper, the absorption spectrum and the electron paramagnetic … WebIn chemistry, crystallography, and materials science, the coordination number, also called ligancy, of a central atom in a molecule or crystal is the number of atoms, molecules or ions bonded to it. The ion/molecule/atom surrounding the central ion/molecule/atom is …

WebMar 27, 1996 · The possible laser systems for HpD tumors diagnostics and therapy are presented in this paper. The principal laser system for those applications is based on Forsterite laser. Generation two wavelengths -- for therapy ((lambda) equals 630 plus or minus 10 nm) and diagnostics ((lambda) equals 400 plus or minus 5 nm) are possible in … Web用Newman的叠加模型研究了KZnF3：Cr3＋晶体Cr3＋—K＋空位的三角晶场参量。研究表明，晶格畸变对晶场的贡献不可忽略，进一步证实了晶格畸变：Cr3＋离子上方三个F－离子和Cr3＋离子下方三个F－离子分别偏离〔111〕晶轴2．661°和－1．

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WebCr3+:KZnF3 gain medium, was tunable over the wavelength range 785-865 nm [5]. For perovskite-struc- tured crystals, space group Pm3m, such as KZnF3 or KMgF3, the Cr 3+ ion substitutes for the alkaline-earth ion, Zn 2 + or Mg 2 +, at the centre of an octahedral array of six F- ions (Fig. 2a). palletline llanelliWebPotassium zinc fluoride (KZnF3) IUPAC Name: Potassium zinc fluoride (1/1/3) CAS Number: 13827-02-6. EPA Registry Name: Potassium zinc fluoride (KZnF3) Molecular Weight: 123.49 Molecular Formula: F.K.Zn Additional Metadata. For more information about the substance, you may click one of the links below to take you to the relevant section: ... エアロロノア 馬主WebJun 17, 2016 · Observation of an intense optical linear dichroism arising in cubic KZnF 3 :Cr crystal at low temperatures under uniaxial stress applied along the four-fold axis is reported. Dichroism occurs in the range of the wide vibronic absorption band corresponding to 5Eg → 5T2g transition of the Cr 2+ ions. pallet linen cabinetWebMar 20, 2000 · The ab initio model potential (AIMP) method has been proven to produce effective one-electron operators that accurately represent the embedding effects of the cations and anions that consititute crystalline lattices like the KMgF 3, KZnF 3, and CsCaF 3 cubic fluoroperovskites. palletline locationsWeb2024届河北衡水中学新高三原创预测试卷(十九)化学_试卷_高三_2024_化学_河北 palletline near meWebJul 1, 2024 · A series of Cr 3+ –Yb 3+ /Nd 3+ /Er 3+ codoped LaGaO 3 phosphors were synthesized by a traditional solid-state method. The morphology, crystal structure, phase purity, and the luminescence properties of samples were characterized by using X-ray diffraction, Rietveld refinement, field-emission scanning electron microscopy, and … palletline.itWebTUNABLE SINGLE FREQUENCY LASER IN Co++:KZnF3 K.R. German, U. Durr, and U. Branch … palletline newcastle