High-field study of muonium states in HfO2 and ZrO2

13th International Conference on Muon Spin Rotation, Relaxation and Resonance

Vieira, R.B.L.^1 ; Vilão, R.C.^1 ; Alberto, H.V.^1 ; Gil, J.M.^1 ; Weidinger, A.^1 ; Baker, B.B.^2 ; Mengyan, P.W.^2 ; Lichti, R.L.^2

CEMDRX, Department of Physics, University of Coimbra, Coimbra

P-3004-516, Portugal^1

Department of Physics, Texas Tech University, Lubbock

TX

79409-1051, United States^2

关键词: High field;    Monoclinic zirconia;    Muonium;    Transverse field;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/551/1/012048/pdf
DOI  :  10.1088/1742-6596/551/1/012048

来源: IOP

【 摘 要 】

We present high-transverse field measurements, as a function of temperature, in monoclinic ZrO2 and HfO2. In monoclinic zirconia and hafnia, a diamagnetic component had been previously reported in low-transverse-fields, but a significant fraction of the total muon polarization was missing in these experiments. We now characterize this missing fraction using the high-field capabilities at TRIUMF: a high relaxation component (above 100 μs-1in monoclinic ZrO2, about 10 μs-1in HfO2) is observed, which we relate to the formation of compact muonium in these materials. A model for the formation of muonium in these materials is presented.