Material for realizing relaxation-normal ferroelectric phase change through doping, and method thereof

The invention discloses a material for realizing relaxation-normal ferroelectric phase change through doping, and a method thereof. The chemical formula of the material is (1-x)SBN-xNN (x = 0-0.8). Na<+> in the material occupies an A-site lattice position which is not occupied by Sr<2+>...

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Bibliographic Details
Main Authors ZHANG SHANTAO, HE XIAOJUAN, GU ZHENGBIN, ZHANG YICHI
Format Patent
LanguageChinese
English
Published 19.11.2021
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:The invention discloses a material for realizing relaxation-normal ferroelectric phase change through doping, and a method thereof. The chemical formula of the material is (1-x)SBN-xNN (x = 0-0.8). Na<+> in the material occupies an A-site lattice position which is not occupied by Sr<2+> and Ba<2+> in a tungsten bronze structure, when x is equal to 0, the material is of a non-filled tungsten bronze structure, when x is equal to 0.4, the material is of a filled tungsten bronze structure, and when x is greater than 0.4, the material has a tungsten bronze and perovskite two-phase coexisting composite structure. The method comprises the following steps: synthesizing single-phase SBN powder by adopting a two-step solid-phase reaction method, uniformly mixing the single-phase SBN powder with Na2CO3 and Nb2O5 powder, and sintering at high temperature to obtain the corresponding ceramic material. By doping NN, the SBN crystal structure is converted from a non-full type to a full type, relaxation-normal ferroelectric p
Bibliography:Application Number: CN202111002354