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METHOD FOR THE PREPARATION OF A LEAD-FREE PIEZOELECTRIC MATERIAL AND PRECURSOR SOLUTION
The present invention relates to a method for the preparation of a precursor solution for a ceramic of the BZT-αBXT type wherein X is selected from Ca, Sn, Mn and Nb and α is a molar fraction selected in the range between 0.10 and 0.90 comprising the steps of: a) dissolving at least one barium precursor compound and at least one precursor compound selected from the group consisting of a calcium precursor compound, a tin precursor compound, a manganese precursor compound and a niobium precursor compound in a linear or branched anhydrous alkyl alcohol containing from 2 to 6 carbon atoms and, after dissolution, dehydrating by stripping, to obtain a first solution; b) dissolving at least one zirconium precursor compound and at least one titanium precursor compound in a linear or branched anhydrous alkyl alcohol containing from 2 to 6 carbon atoms in the presence of an anhydrous chelating agent to obtain a second solution; c) joining said first and second solutions in an anhydrous environment and dehydrating by stripping to obtain said precursor solution. It also relates to a precursor solution, to a method for the preparation of a film of a piezoelectric material, to a piezoelectric material and to an electronic device comprising this piezoelectric material.
METHOD FOR THE PREPARATION OF A LEAD-FREE PIEZOELECTRIC MATERIAL AND PRECURSOR SOLUTION
The present invention relates to a method for the preparation of a precursor solution for a ceramic of the BZT-αBXT type wherein X is selected from Ca, Sn, Mn and Nb and α is a molar fraction selected in the range between 0.10 and 0.90 comprising the steps of: a) dissolving at least one barium precursor compound and at least one precursor compound selected from the group consisting of a calcium precursor compound, a tin precursor compound, a manganese precursor compound and a niobium precursor compound in a linear or branched anhydrous alkyl alcohol containing from 2 to 6 carbon atoms and, after dissolution, dehydrating by stripping, to obtain a first solution; b) dissolving at least one zirconium precursor compound and at least one titanium precursor compound in a linear or branched anhydrous alkyl alcohol containing from 2 to 6 carbon atoms in the presence of an anhydrous chelating agent to obtain a second solution; c) joining said first and second solutions in an anhydrous environment and dehydrating by stripping to obtain said precursor solution. It also relates to a precursor solution, to a method for the preparation of a film of a piezoelectric material, to a piezoelectric material and to an electronic device comprising this piezoelectric material.
METHOD FOR THE PREPARATION OF A LEAD-FREE PIEZOELECTRIC MATERIAL AND PRECURSOR SOLUTION
VERFAHREN ZUR HERSTELLUNG EINES BLEIFREIEN PIEZOELEKTRISCHEN MATERIALS UND VORLÄUFERLÖSUNG
PROCÉDÉ DE PRÉPARATION D'UN MATÉRIAU PIÉZOÉLECTRIQUE SANS PLOMB ET D'UNE SOLUTION DE PRÉCURSEUR
CASUSCELLI VALERIA (author) / SCALDAFERRI ROSSANA (author)
2022-10-19
Patent
Electronic Resource
English
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