A Mossbauer polarimeter consists of a gamma ray source (polarizer), transmitter (sample to be analyzed), analyzer and automatic counting system. This equipment was used to observe the Mossbauer Faraday effect in non-s...A Mossbauer polarimeter consists of a gamma ray source (polarizer), transmitter (sample to be analyzed), analyzer and automatic counting system. This equipment was used to observe the Mossbauer Faraday effect in non-stoichiometric Fe3O4. Experimental results demonstrated that electronic hopping above the Verwey temperature between Fe2+- Fe3+ ions on the octahedral sites is a only localized phenomenon and the recoilless fractions of 57Fe nuclei in Fe3-vO4 (v=0.02) are 0.71 for A sites and 0.62 for B sites, respectively.展开更多
We have observed the Mossbauer Faraday effect in nonstoichiometric Fe_3O_4 by the Mossbauer polarimeter. Experimental results demonstrate that the electronic hopping above Verwey temperature within Fe^(2+)-Fe^(3+) ion...We have observed the Mossbauer Faraday effect in nonstoichiometric Fe_3O_4 by the Mossbauer polarimeter. Experimental results demonstrate that the electronic hopping above Verwey temperature within Fe^(2+)-Fe^(3+) ions on the octahedral sites is only a localized phenomenon and the recoilless fractions of ^(57)Fe nuclei in Fe_(3-0.02v)O_4 are 0.71 for A sites and 0.62 for B sites, respectively.展开更多
文摘A Mossbauer polarimeter consists of a gamma ray source (polarizer), transmitter (sample to be analyzed), analyzer and automatic counting system. This equipment was used to observe the Mossbauer Faraday effect in non-stoichiometric Fe3O4. Experimental results demonstrated that electronic hopping above the Verwey temperature between Fe2+- Fe3+ ions on the octahedral sites is a only localized phenomenon and the recoilless fractions of 57Fe nuclei in Fe3-vO4 (v=0.02) are 0.71 for A sites and 0.62 for B sites, respectively.
基金Project supported by the National Natural Science Foundation of China
文摘We have observed the Mossbauer Faraday effect in nonstoichiometric Fe_3O_4 by the Mossbauer polarimeter. Experimental results demonstrate that the electronic hopping above Verwey temperature within Fe^(2+)-Fe^(3+) ions on the octahedral sites is only a localized phenomenon and the recoilless fractions of ^(57)Fe nuclei in Fe_(3-0.02v)O_4 are 0.71 for A sites and 0.62 for B sites, respectively.
