...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >EPR of γ-induced paramagnetic centers in tellurite glasses
【24h】

EPR of γ-induced paramagnetic centers in tellurite glasses

机译：碲酸盐玻璃中γ诱导的顺磁中心的EPR

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Intrinsic paramagnetic responses were observed in the 60TeO _2-25ZnO-15Na_2O and 85TeO_2-15Na_2O mol% glasses, after γ-irradiation at room temperature: (1) a shoulder at g_1 = g_∥ = 2.02 ± 0.01 and an estimated g _∥ ～ 2.0 attributed to tellurium-oxygen hole center (TeOHC); (2) a narrow resonance at g_2 = 1.9960 ± 0.0005 related to the modifiers and (3) a resolved resonance at g_3 = 1.9700 ± 0.0005 ascribed to a tellurium electron center (TeEC) of an electron trapped at an oxygen vacancy (V_O~+) in a tellurium oxide structural center. It is suggested that the creation of (NBO~-,V_O~+) pair follows a mechanism where the modifier oxide molecule actuates as a catalyser. An additional model for the NBO radiolysis produced by the γ-irradiation is proposed on the basis of the evolution of the g _1, g_2 and g_3 intensities with increasing dose (kGy).
机译：在室温下γ辐照后，在60TeO _2-25ZnO-15Na_2O和85TeO_2-15Na_2O mol％玻璃中观察到内在的顺磁响应：（1）g_1 =g_∥= 2.02±0.01时的肩膀和估计的g_∥〜 2.0归因于碲-氧空穴中心（TeOHC）; （2）与改性剂有关的在g_2 = 1.9960±0.0005处的窄共振，以及（3）在g_3 = 1.9700±0.0005处的分辨共振归因于氧空位（V_O〜+）俘获的电子的碲电子中心（TeEC） ）位于氧化碲结构中心。提出（NBO--，V_O-+）对的产生遵循一种机制，其中改性氧化物分子作为催化剂而活化。根据g _1，g_2和g_3强度随剂量（kGy）的变化，提出了由γ辐射产生的NBO辐射分解的另一种模型。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号