OXIDE CONDUCTION 1369

Vol. 124, No. 10 HIGH ION sphere, it may be avai lable for practical solid electro-lytes under oxidizing atmosphere because of its high conductivity and easy preparation. Manuscript submitted Apri l 26, 1977; revised manu-script received June 10, 1977. Any discussion of this paper wil l appear in a Discus-sion ~ection to be published in the June 1978 JOURNAL. Al l discussions for the June 1978 Discussion Section should be submitted by Feb. 1, 1978. Publication costs o] this article were assisted by the authors