1.
Absence of interaction between ferroelectric and incommensurate transitions in Ba2NaNb5(1-x)Ta5xO15.
Phys Rev B Condens Matter
; 52(13): 9117-9120, 1995 Oct 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-9979938
2.
Science
; 236(4797): 73-5, 1987 Apr 03.
Artigo
em Inglês
| MEDLINE
| ID: mdl-17759207
RESUMO
La(2)CuO4-y ceramics containing a few percent of Ca(2+), Sr(2+), and Ba(2+) ions have been prepared. Resistivity and susceptibility measurements exhibit superconductive onsets (as in earlier Ba(2+)-containing samples). The onset temperature La(2)CuO4-y with Sr(2+) is higher and its superconductivity-induced diamagnetism larger than that found with Ba(2+) and Ca(2+). This is proof that the electronic change resulting from alkaline earthdoping, rather than the size effect, is responsible for superconductivity. The ionic radius of Sr(2+) is close to that of La(3+) for which it presumably substitutes.
3.
4.
Eisei Shikenjo Hokoku
; 88: 57-60, 1970.
Artigo
em Japonês
| MEDLINE
| ID: mdl-6015304
5.
Eisei Shikenjo Hokoku
; 86: 79-81, 1968.
Artigo
em Japonês
| MEDLINE
| ID: mdl-5753692