A muon - spin relaxation study of BiMnO 3
نویسنده
چکیده
We present the results of muon-spin relaxation measurements on ferromagnetic BiMnO3. Below TC = 98.0(1) K oscillations in the time-dependence of the muon polarization are observed, characteristic of a quasistatic magnetic field at a single muon site, allowing us to probe the critical behaviour associated with the magnetic phase transition. We are able to suggest candidate muon sites on the basis of dipole field calculations. Close to TC, fluctuations of the Mn 3+ moments are characteristic of critical behaviour while there is a sharp crossover to a region of fast dynamic fluctuations at higher temperatures. PACS numbers: 75.47.Lx, 75.50.Dd, 76.75.+i, 77.80.-e Submitted to: J. Phys.: Condens. Matter
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تاریخ انتشار 2008