Effects of MgO and Mg(OH)2 on phase formation and properties of strontium-doped MgTiO3 microwave dielectric ceramics

Yi Cheng Liou; Song Ling Yang; Sheng Yuan Chu

doi:10.1016/j.jallcom.2013.04.111

Effects of MgO and Mg(OH)₂ on phase formation and properties of strontium-doped MgTiO₃ microwave dielectric ceramics

Yi Cheng Liou, Song Ling Yang, Sheng Yuan Chu

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The effects of MgO and Mg(OH) ₂ on the phase formation and properties of 0.97MgTiO_3-0.03SrTiO₃ ceramics were investigated. MgTi₂O₅ formed in pellets added with MgO (MST) and disappeared in pellets added with Mg(OH)2 (MHST). Abnormal grain growth was observed in MHST due to different reactions during the heating process. Values of σ_r = 20-22.1, Q × f = 16,500-23,000 GHz and τ _f =-5.2 to 4.1 ppm/°C and of σ_r = 17.3-17.7, Q × f = 31,300-48,600 GHz and σ_r =-9.1 to 0.9 ppm/°C were measured for MST and MHST, respectively. Lower er for MHST was caused by a lower density. Q × f increased and τ_f shifted to more negative values when Mg(OH)₂ was used instead of MgO.

Original language	English
Pages (from-to)	161-169
Number of pages	9
Journal	Journal of Alloys and Compounds
Volume	576
DOIs	https://doi.org/10.1016/j.jallcom.2013.04.111
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2013.04.111

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@article{28fd098dbc454a9cbb03acc2850d3c37,

title = "Effects of MgO and Mg(OH)2 on phase formation and properties of strontium-doped MgTiO3 microwave dielectric ceramics",

abstract = "The effects of MgO and Mg(OH) 2 on the phase formation and properties of 0.97MgTiO3-0.03SrTiO3 ceramics were investigated. MgTi2O5 formed in pellets added with MgO (MST) and disappeared in pellets added with Mg(OH)2 (MHST). Abnormal grain growth was observed in MHST due to different reactions during the heating process. Values of σr = 20-22.1, Q × f = 16,500-23,000 GHz and τ f =-5.2 to 4.1 ppm/°C and of σr = 17.3-17.7, Q × f = 31,300-48,600 GHz and σr =-9.1 to 0.9 ppm/°C were measured for MST and MHST, respectively. Lower er for MHST was caused by a lower density. Q × f increased and τf shifted to more negative values when Mg(OH)2 was used instead of MgO.",

author = "Liou, {Yi Cheng} and Yang, {Song Ling} and Chu, {Sheng Yuan}",

note = "Funding Information: This study was supported by the National Science Council of the Republic of China under Contract NSC 95-2221-E-168-015 . ",

year = "2013",

doi = "10.1016/j.jallcom.2013.04.111",

language = "English",

volume = "576",

pages = "161--169",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Effects of MgO and Mg(OH)2 on phase formation and properties of strontium-doped MgTiO3 microwave dielectric ceramics

AU - Liou, Yi Cheng

AU - Yang, Song Ling

AU - Chu, Sheng Yuan

N1 - Funding Information: This study was supported by the National Science Council of the Republic of China under Contract NSC 95-2221-E-168-015 .

PY - 2013

Y1 - 2013

N2 - The effects of MgO and Mg(OH) 2 on the phase formation and properties of 0.97MgTiO3-0.03SrTiO3 ceramics were investigated. MgTi2O5 formed in pellets added with MgO (MST) and disappeared in pellets added with Mg(OH)2 (MHST). Abnormal grain growth was observed in MHST due to different reactions during the heating process. Values of σr = 20-22.1, Q × f = 16,500-23,000 GHz and τ f =-5.2 to 4.1 ppm/°C and of σr = 17.3-17.7, Q × f = 31,300-48,600 GHz and σr =-9.1 to 0.9 ppm/°C were measured for MST and MHST, respectively. Lower er for MHST was caused by a lower density. Q × f increased and τf shifted to more negative values when Mg(OH)2 was used instead of MgO.

AB - The effects of MgO and Mg(OH) 2 on the phase formation and properties of 0.97MgTiO3-0.03SrTiO3 ceramics were investigated. MgTi2O5 formed in pellets added with MgO (MST) and disappeared in pellets added with Mg(OH)2 (MHST). Abnormal grain growth was observed in MHST due to different reactions during the heating process. Values of σr = 20-22.1, Q × f = 16,500-23,000 GHz and τ f =-5.2 to 4.1 ppm/°C and of σr = 17.3-17.7, Q × f = 31,300-48,600 GHz and σr =-9.1 to 0.9 ppm/°C were measured for MST and MHST, respectively. Lower er for MHST was caused by a lower density. Q × f increased and τf shifted to more negative values when Mg(OH)2 was used instead of MgO.

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U2 - 10.1016/j.jallcom.2013.04.111

DO - 10.1016/j.jallcom.2013.04.111

M3 - Article

AN - SCOPUS:84877819791

SN - 0925-8388

VL - 576

SP - 161

EP - 169

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Effects of MgO and Mg(OH)₂ on phase formation and properties of strontium-doped MgTiO₃ microwave dielectric ceramics

Abstract

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