Thermionic electron emission of the barium tungsten bronzes Ba0.15WO3 and Ba0.21WO3

Zocchi, F.
December 1985
Applied Physics Letters;12/15/1985, Vol. 47 Issue 12, p1276
Academic Journal
The values of the work function and thermionic constant were determined for orthorhombic Ba[sub 0.15]WO[sub 3] (φ = 2.04 eV, A = 100 A/cm²K²) and tetragonal Ba[sub 0.21] WO[sub 3] (φ = 2.27 eV, A = 88 A/cm² K²). The different thermionic behavior of the two bronzes, shown even in the activation processes, cannot be explained in terms of their known structures, and therefore a more detailed structural analysis is suggested.


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