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-1.149° 展开 WebApr 15, 2024 · KZnF 3 is a typical member of the fluoride perovskites and it can provide …
Charge compensation and the luminescence of Cr 3+ in KMgF 3
WebJul 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 … 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. export global address book to csv
KZnF3:Cr3+ — A tunable solid state NIR-laser - Semantic …
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). 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 … 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 … bubbles in bottles game