## Abstract

The electric field gradients in ZrO_{2} and HfO_{2} have been measured by applying the differential perturbed angular correlation method to the 133-482 keV cascade in ^{181}Ta. The results for HfO_{2} have been compared with previous results. In general, a fairly good agreement has been found except for the electric field asymmetry parameter eta , in which the older result of Gerdau (1969) et al, rather than the more recent one of Gardner and Prestwich (1970) has been confirmed. The results for ZrO_{2} show the electric field gradient to be (13.3+or-0.7)*10^{17} V cm^{-2} which is slightly higher than the value of (12.8+or-0.6) *10^{17} V cm^{-2} obtained for HfO_{2}. The corresponding values for the field asymmetry are 0.335+or-0.015 for ZrO _{2} and 0.348+or-0.016 for HfO_{2}. Despite the small difference of only 4% between the corresponding means, the 't' distribution shows, with confidence of better than 99%, that the results for ZrO_{2} and HfO_{2} are different.

Original language | English |
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Article number | 021 |

Pages (from-to) | 430-438 |

Number of pages | 9 |

Journal | Journal of Physics C: Solid State Physics |

Volume | 7 |

Issue number | 2 |

DOIs | |

State | Published - 1974 |

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