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  van Smaalen, S.; Daniels, P.; Galli, F.; Feyerherm, R.; Dudzik, E.; Nieuwenhuys, G.J.; Mydosh, J.A.: Charge-density waves in Er₅Ir₄Si₁₀ type compounds. Journal de Physique IV 12 (2002), p. Pr9-347-Pr9-350

10.1051/jp4:20020434

Abstract:
X-ray diffraction with synchrotron radiation has been used to study the phase transitions in compounds M5Ir4Si10 with M a rare-earth metal. For M=Er, Ho and Er0.84Lu0.16 phase transitions have been found towards a combined commensurate/incommensurate state, that locks into a commensurate state at lower temperatures. For M=Lu and Er0.66Lu0.34 there is a single transition towards a commensurate state. The results are interpreted in terms of commensurate structural transitions that induce incommensurate CDWs.