Raman spectroscopy of mass-selected CrFe

✍ Scribed by Haiyan Lu; Bing Zhao; John R Lombardi

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 193 KB
• Volume: 376
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/s0009-2614(03)00943-6

✦ Synopsis

We report on the resonance Raman spectroscopy of mass-selected CrFe. The molecule is isolated by sputtering a CrFe metal target, followed by mass-separation through a Wien filter. Samples are deposited in an argon matrix at 14 K. Raman spectra are obtained at several excitation wavelengths (476.5, 488.0, 496.5, 501.7, 514.5 nm) and a clear progression up to m 00 ¼ 6 is obtained. Analysis results in values of x e ¼ 166:6 AE 0:8 cm À1 and x e x e ¼ 1:1 AE 0:1 cm À1 . This rather low frequency gives a force constant of 0.44 mdyne/ A A, indicating considerably weaker bonding than observed in either Cr 2 or Fe 2 .