CN110218089A - 一种谐振频率温度系数近零的8层六方钙钛矿微波介质陶瓷及其制备方法 - Google Patents

一种谐振频率温度系数近零的8层六方钙钛矿微波介质陶瓷及其制备方法 Download PDF

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CN110218089A
CN110218089A CN201910488584.4A CN201910488584A CN110218089A CN 110218089 A CN110218089 A CN 110218089A CN 201910488584 A CN201910488584 A CN 201910488584A CN 110218089 A CN110218089 A CN 110218089A
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匡小军
杨小燕
吉别克
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Guilin University of Technology
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Abstract

本发明公开一种介电常数ε在29‑35之间,品质因子与谐振频率乘积(Q×f)在20000‑70000GHz，谐振频率温度系数(τf)在0‑63ppm/℃之内可调的8层六方钙钛矿微波介质陶瓷及其制备方法，属于微波介质陶瓷制备技术领域。其化学组成为Ba8CoNb6‑xTaxO24(x＝1‑6)，当0≤x≤2时为位移型结构，当3≤x≤6时为孪生型结构。本发明采用等价离子取代引起结构构型转变，使8层六方钙钛矿微波介质陶瓷的谐振频率温度系数可调，涉及组成及制备工艺简单，可应用于单相可调谐振频率温度系数的介质谐振器、微波集成电路基片等领域。

Description

一种谐振频率温度系数近零的8层六方钙钛矿微波介质陶瓷 及其制备方法
技术领域
本发明涉及在微波频率使用的介质谐振器、微波集成电路基片和滤波器等微波器件的介质陶瓷材料及其制备方法。
背景技术
微波介质陶瓷是近几十年来快速发展的一种新型电子多功能陶瓷材料，由于其高介电电常数、高品质因子和低的谐振频率温度系数，作为介质谐振器/滤波器等微波电子元件广泛应用于移动通讯、卫星通讯、全球卫星定位系统、蓝牙设备及无线局域网等微波通讯系统中。目前应用于通讯设备的微波介质陶瓷材料需满足品质因子Q×f～30000GHz，介电常数ε在20-100之间和尽可能接近于0ppm/℃的谐振频率温度系数。其中材料的品质因子Q×f越高，越具有优良的选频特性，高的介电常数有利于电子元件的小型化，谐振频率温度系数τf越接近于0ppm/℃，谐振器的频率热稳定性越高。目前已商业化的单一相微波介质材料中满足谐振频率温度系数τf～0ppm/℃的大多为立方钙钛矿材料钽酸盐或铌酸盐。六方钙钛矿与立方钙钛矿具有相同的结构单元且化学组成丰富，根据八面体排列差异可分为位移型和孪生型结构，其中8层六方钙钛矿表现出了非常优异的微波介电性能，品质因子Q×f～30000-100000GHz，介电常数ε～30-40，但是谐振频率温度系数τf＞0(25-40ppm/℃)，从而限制了8层六方钙钛矿在微波介质材料领域的应用。目前，通过等价离子取代获得近0ppm/℃的谐振频率温度系数，满足介质谐振器/滤波器电子元件应用要求的单相8层六方钙钛矿材料很稀缺。
发明内容
本发明提供了一种谐振频率温度系数近零的8层六方钙钛矿微波介质陶瓷及其制备方法，所述的8层六方钙钛矿微波介质陶瓷按以下步骤制备：
(1)将原料BaCO3(99％),CoC2O4·2H2O(96％),Nb2O5(99.99％)和Ta2O5(99.5％)根据Ba8CoNb6-xTaxO24化学式称量配料；
(2)将步骤(1)中原料在玛瑙研钵中混合湿式研磨均匀，溶剂为无水乙醇，烘干后在1200℃大气气氛中预烧8小时；
(3)对由步骤(2)制得的粉末进行二次研磨，再压制成型，最后在1450℃大气气氛中烧结12～36小时。
本发明制备的8层六方钙钛矿微波介质陶瓷，其制备工艺简单，具有高的品质因子(Q×f～20000-70000GHz)和较高的介电常数(29-35)，同时谐振频率温度系数在0-63ppm/℃可调，可满足单一相的介质谐振器/滤波器电子元件的应用要求。
附图说明
图1为实施例1-7的粉末X射线衍射图谱。
具体实施方式
表1示出了本发明的不同组成的7个具体实施例及其微波介电性能。其制备方法如上所述，通过粉末X-射线衍射法对烧结后的陶瓷样品进行物相分析，图1是实施例1-7的X射线衍射图谱，表明组成在x＝0-2时为位移型8层六方钙钛矿，组成在x＝3-6时为孪生型8层六方钙钛矿。用圆柱介质谐振器法进行微波介电性能的评价。
本发明可广泛用于各种介质基板、谐振器/滤波器等微波器件的制造，可满足移动通讯、卫星通讯、全球卫星定位系统、蓝牙设备及无线局域网等系统的技术需要。
表1：

Claims (2)

1.一种介电常数(ε)在29-35之间，品质因子与谐振频率乘积(Q×f)在20000-70000GHz，谐振频率温度系数(τf)在0-63ppm/℃之内可调的8层六方钙钛矿微波介质陶瓷，其特征在于8层六方钙钛矿微波介质陶瓷的化学组成是Ba8CoNb6-xTaxO24，其中0≤x≤6。当0≤x≤2时为位移型结构，当3≤x≤6时为孪生型结构。
2.权利要求1所述的微波介质陶瓷，其特征在于按以下步骤制备：
(1)将原料BaCO3，CoC2O4·2H2O，Nb2O5和Ta2O5根据Ba8CoNb6-xTaxO24化学式称量配料，其中BaCO3纯度为99％，CoC2O4·2H2O纯度为96％，Nb2O5纯度为99.99％，Ta2O5纯度为99.5％；
(2)将步骤(1)中原料在玛瑙研钵中混合湿式研磨均匀，溶剂为无水乙醇，烘干后在1200℃大气气氛中预烧8小时；
(3)对由步骤(2)制得的粉末进行二次研磨，再压制成型，最后在1450℃大气气氛中烧结12～36小时。
CN201910488584.4A 2019-06-06 2019-06-06 一种谐振频率温度系数近零的8层六方钙钛矿微波介质陶瓷及其制备方法 Pending CN110218089A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111925210A (zh) * 2020-08-21 2020-11-13 广东国华新材料科技股份有限公司 一种金属化合物和微波介质陶瓷及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1270532A1 (en) * 2001-06-20 2003-01-02 NGK Spark Plug Company Limited Dielectric BMN composition
CN1569730A (zh) * 2004-04-28 2005-01-26 武汉理工大学 近零频率温度系数的类钙钛矿微波介质陶瓷及其制备方法
CN103570349A (zh) * 2012-07-26 2014-02-12 深圳市国华新材料科技股份有限公司 掺杂改性的复合钙钛矿型微波介质陶瓷Ba(Co,Nb)O3及其制备方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1270532A1 (en) * 2001-06-20 2003-01-02 NGK Spark Plug Company Limited Dielectric BMN composition
CN1569730A (zh) * 2004-04-28 2005-01-26 武汉理工大学 近零频率温度系数的类钙钛矿微波介质陶瓷及其制备方法
CN103570349A (zh) * 2012-07-26 2014-02-12 深圳市国华新材料科技股份有限公司 掺杂改性的复合钙钛矿型微波介质陶瓷Ba(Co,Nb)O3及其制备方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PHILLIP.M.MALLINSON等: "Ba8CoNb6O24:A d0 dielectric oxide host containing ordered d7 cation layers 1.88nm apart", 《ANGEW.CHEM.INT.ED》 *
R. RAWL等: "Ba8CoNb6O24: a spin-1/2 triangular-lattice Heisenberg antiferromagnet in the 2D limit", 《PHYSICAL REVIEW B》 *
吉别克: "等价离子取代对Ba8B’B’’6O24八层六方钙钛矿的结构及电解质的影响", 《万方学位论文数据库》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111925210A (zh) * 2020-08-21 2020-11-13 广东国华新材料科技股份有限公司 一种金属化合物和微波介质陶瓷及其制备方法

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Application publication date: 20190910