Antiferromagnetism in CaCu3Ti4O12 studied by magnetic Raman spectroscopy

A. Koitzsch, G. Blumberg, A. Gozar, B. Dennis, A. P. Ramirez, A. P. Ramirez, S. Trebst, Shuichi Wakimoto

Research output: Contribution to journalArticlepeer-review

77 Scopus citations


For CaCu3Ti4O12 - an insulator that exhibits a giant dielectric response above 100 K - Cu2+ antiferromagnetic spin ordering has been investigated by magnetic Raman scattering and magnetization measurements. Below the Néel temperature, TN=25 K, magnetic excitations have been identified. Above TN Raman spectra reveal short-range antiferromagnetic fluctuations that increase with cooling like T-1. No deviations from Curie-Weiss law have been observed above TN.

Original languageEnglish (US)
Article number052406
Pages (from-to)524061-524064
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number5
StatePublished - Feb 1 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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