Topic
Valency
About: Valency is a research topic. Over the lifetime, 1632 publications have been published within this topic receiving 26141 citations.
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TL;DR: In this paper, a clear dependence of the critical temperature of high temperature superconductors on the sequence number of the constituent elements, their valency, and the structure of the crystal lattice is revealed.
Abstract: The dependence of the critical temperature of high temperature superconductors of various families on their composition and structure is proposed. A clear dependence of the critical temperature of high temperature superconductors on the sequence number of the constituent elements, their valency, and the structure of the crystal lattice is revealed.
2 citations
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21 Feb 1987
TL;DR: In this paper, the compd. of the raw material for forming the photomagnetic recording layer expressed by the specific formula and active species was introduced into a film forming chamber and causing a chemical reaction.
Abstract: PURPOSE:To form a photomagnetic recording layer having an excellent storage environment characteristic and uniform quality with low medium noise on a substrate with good reproducibility by introducing the raw material for forming the photomagnetic recording layer expressed by the specific formula and active species into a film forming chamber and causing a chemical reaction. CONSTITUTION:The compd. of the raw material for forming the photomagnetic recording layer expressed by the formula RnMm and the active species making the chemical reaction with said compd. is introduced into the film forming chamber and the photomagnetic recording layer is formed on the substrate. In the formula, M is a transition metal element or rare earth metal element (Fe, Co, Ni, Gd, Tb, Dy, etc.), R is hydrogen, halogen, hydrocarbon group, m is equal to the valency of R or the positive integer of the integer times said valency, n is equal to the valency of M or the positive integer of the integer times said valency. The active species are generated by applying thermal energy by hydrogen, etc., and the proportion of the compd. and the active species is preferably about 1,000:1-1:10 (introducing flow rate ratio). The internal pressure of the film forming space is preferably about 1X10 -5X10 PA.
2 citations
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TL;DR: Polarization of La2CuO4 in 1 N KOH at 900 mV (66 h) yields a metallic material which exhibits a superconducting transition around 47 K as discussed by the authors.
Abstract: Polarization of La2CuO4 in 1 N KOH at 900 mV (66 h) yields a metallic material which exhibits a superconducting transition around 47 K. The room temp. resistivity of this material is strongly decreased which is explained by the mixed valency of Cu resulting from the electrochemical treatment.
2 citations
01 Jan 1996
2 citations