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1. (WO2018180770) PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2018/180770 International Application No.: PCT/JP2018/011037
Publication Date: 04.10.2018 International Filing Date: 20.03.2018
IPC:
C04B 35/495 (2006.01) ,H01L 41/083 (2006.01) ,H01L 41/187 (2006.01) ,H01L 41/43 (2013.01)
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
01
based on oxides
495
based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41
Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08
Piezo-electric or electrostrictive elements
083
having a stacked or multilayer structure
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41
Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
16
Selection of materials
18
for piezo-electric or electrostrictive elements
187
Ceramic compositions
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41
Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
22
Processes or apparatus specially adapted for the assembly, manufacture or treatment of piezo-electric or electrostrictive devices or of parts thereof
35
Forming piezo-electric or electrostrictive materials
39
Inorganic materials
43
by sintering
Applicants:
TDK株式会社 TDK CORPORATION [JP/JP]; 東京都中央区日本橋二丁目5番1号 2-5-1, Nihonbashi, Chuo-ku, Tokyo 1036128, JP
Inventors:
廣瀬 正和 HIROSE, Masakazu; JP
廣瀬 維子 HIROSE, Yuiko; JP
加藤 浩輝 KATOH, Hiroki; JP
Agent:
前田・鈴木国際特許業務法人 MAEDA & SUZUKI; 東京都千代田区一ツ橋2丁目5番5号 岩波書店一ツ橋ビル8階 8F, Iwanami Shoten Hitotsubashi Bldg., 5-5, Hitotsubashi 2-chome, Chiyoda-ku, Tokyo 1010003, JP
Priority Data:
2017-06238128.03.2017JP
Title (EN) PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT
(FR) COMPOSITION PIÉZOÉLECTRIQUE ET ÉLÉMENT PIÉZOÉLECTRIQUE
(JA) 圧電組成物および圧電素子
Abstract:
(EN) [Problem] To provide: a piezoelectric composition able to achieve a balance between mechanical strength and electromechanical coupling coefficient k31; and a piezoelectric element comprising the piezoelectric composition. [Solution] A piezoelectric composition which contains manganese and a composite oxide having a perovskite structure represented by general formula ABO3, wherein the piezoelectric composition is characterized in that: the A site element in the ABO3 is potassium or potassium and sodium; the B site element is niobium; and in the piezoelectric composition, a variation exists in the concentration distribution of manganese, and this variation is 35-440% in terms of CV value.
(FR) Le problème décrit par la présente invention est de fournir : une composition piézoélectrique apte à atteindre un équilibre entre la force mécanique et le coefficient de couplage électromécanique k31; et un élément piézoélectrique comprenant la composition piézoélectrique. La solution selon l'invention porte sur une composition piézoélectrique qui contient du manganèse et un oxyde composite ayant une structure pérovskite représentée par la formule générale ABO3, où la composition piézoélectrique est caractérisée comme suit : l'élément du site (A) dans l'ABO3 est le potassium ou le potassium et le sodium; l'élément du site (B) est le niobium; et dans la composition piézoélectrique, une variation existe dans la distribution des concentrations du manganèse, et ladite variation est de 35 à 440 % en termes de valeur (CV).
(JA) 【課題】機械的強度と電気機械結合係数k31とを両立できる圧電組成物と、その圧電組成物を備える圧電素子を提供すること。 【解決手段】一般式ABOで表されるペロブスカイト構造を有する複合酸化物と、マンガンと、を含む圧電組成物であって、ABOにおけるAサイト元素が、カリウム、または、カリウムおよびナトリウムであり、Bサイト元素がニオブであり、圧電組成物において、マンガンの濃度分布がばらつきを有しており、当該ばらつきがCV値で、35%以上440%以下であることを特徴とする圧電組成物である。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)