Phase evolution and microwave dielectric properties of TiO 2-modified (Mg0.95Co0.05)2TiO 4 ceramics

Cheng-Liang Huang, Jhih Yong Chen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Phase evolution and microwave dielectric properties of (1 - x)(Mg 0.95Co0.05)2TiO4-xTiO2 (x = 0-1) ceramics prepared by the conventional mixed oxide route have been investigated. Increasing the TiO2 content would lead to a main phase transformation from (Mg0.95Co0.05)2TiO 4 to (Mg0.95Co0.05)TiO3, (Mg 0.95Co0.05)Ti2O5 and then TiO 2. Not only did the TiO2 addition compensate the τf, it also lowered the sintering temperature of specimen. A huge drop of Q × f occurs at a 40-60 mol% TiO2 addition was attributed to the formation of (Mg0.95Co0.05)Ti 2O5 phase. Specimen with x = 0.78 can possess an excellent combination of microwave dielectric properties: εr ∼ 24.77, Q × f ∼ 38,500 GHz and τf ∼ -1.3 ppm/°C.

Original languageEnglish
Pages (from-to)6273-6275
Number of pages3
JournalJournal of Alloys and Compounds
Volume509
Issue number21
DOIs
Publication statusPublished - 2011 May 26

Fingerprint

Dielectric properties
Microwaves
Oxides
Sintering
Phase transitions
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

@article{793ff0093e8c463c91bff785c0f10096,
title = "Phase evolution and microwave dielectric properties of TiO 2-modified (Mg0.95Co0.05)2TiO 4 ceramics",
abstract = "Phase evolution and microwave dielectric properties of (1 - x)(Mg 0.95Co0.05)2TiO4-xTiO2 (x = 0-1) ceramics prepared by the conventional mixed oxide route have been investigated. Increasing the TiO2 content would lead to a main phase transformation from (Mg0.95Co0.05)2TiO 4 to (Mg0.95Co0.05)TiO3, (Mg 0.95Co0.05)Ti2O5 and then TiO 2. Not only did the TiO2 addition compensate the τf, it also lowered the sintering temperature of specimen. A huge drop of Q × f occurs at a 40-60 mol{\%} TiO2 addition was attributed to the formation of (Mg0.95Co0.05)Ti 2O5 phase. Specimen with x = 0.78 can possess an excellent combination of microwave dielectric properties: εr ∼ 24.77, Q × f ∼ 38,500 GHz and τf ∼ -1.3 ppm/°C.",
author = "Cheng-Liang Huang and Chen, {Jhih Yong}",
year = "2011",
month = "5",
day = "26",
doi = "10.1016/j.jallcom.2011.03.046",
language = "English",
volume = "509",
pages = "6273--6275",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",
number = "21",

}

Phase evolution and microwave dielectric properties of TiO 2-modified (Mg0.95Co0.05)2TiO 4 ceramics. / Huang, Cheng-Liang; Chen, Jhih Yong.

In: Journal of Alloys and Compounds, Vol. 509, No. 21, 26.05.2011, p. 6273-6275.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Phase evolution and microwave dielectric properties of TiO 2-modified (Mg0.95Co0.05)2TiO 4 ceramics

AU - Huang, Cheng-Liang

AU - Chen, Jhih Yong

PY - 2011/5/26

Y1 - 2011/5/26

N2 - Phase evolution and microwave dielectric properties of (1 - x)(Mg 0.95Co0.05)2TiO4-xTiO2 (x = 0-1) ceramics prepared by the conventional mixed oxide route have been investigated. Increasing the TiO2 content would lead to a main phase transformation from (Mg0.95Co0.05)2TiO 4 to (Mg0.95Co0.05)TiO3, (Mg 0.95Co0.05)Ti2O5 and then TiO 2. Not only did the TiO2 addition compensate the τf, it also lowered the sintering temperature of specimen. A huge drop of Q × f occurs at a 40-60 mol% TiO2 addition was attributed to the formation of (Mg0.95Co0.05)Ti 2O5 phase. Specimen with x = 0.78 can possess an excellent combination of microwave dielectric properties: εr ∼ 24.77, Q × f ∼ 38,500 GHz and τf ∼ -1.3 ppm/°C.

AB - Phase evolution and microwave dielectric properties of (1 - x)(Mg 0.95Co0.05)2TiO4-xTiO2 (x = 0-1) ceramics prepared by the conventional mixed oxide route have been investigated. Increasing the TiO2 content would lead to a main phase transformation from (Mg0.95Co0.05)2TiO 4 to (Mg0.95Co0.05)TiO3, (Mg 0.95Co0.05)Ti2O5 and then TiO 2. Not only did the TiO2 addition compensate the τf, it also lowered the sintering temperature of specimen. A huge drop of Q × f occurs at a 40-60 mol% TiO2 addition was attributed to the formation of (Mg0.95Co0.05)Ti 2O5 phase. Specimen with x = 0.78 can possess an excellent combination of microwave dielectric properties: εr ∼ 24.77, Q × f ∼ 38,500 GHz and τf ∼ -1.3 ppm/°C.

UR - http://www.scopus.com/inward/record.url?scp=79955638408&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955638408&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2011.03.046

DO - 10.1016/j.jallcom.2011.03.046

M3 - Article

VL - 509

SP - 6273

EP - 6275

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - 21

ER -