Structural and dielectric properties of Mg-doped strontium tltanate ceramics: Dependence on the materials processing

A. Tkach; P. M. Vilarinho; A. Kholkin; Ian M. Reaney; Jan Petzelt

Structural and dielectric properties of Mg-doped strontium tltanate ceramics: Dependence on the materials processing

A. Tkach
, P. M. Vilarinho^*
, A. Kholkin
, Ian M. Reaney
, Jan Petzelt

^*Corresponding author for this work

University of Aveiro
University of Sheffield
Czech Academy of Sciences

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

The effect of materials processing on structural and low-frequency dielectric properties of SrTiO₃ (ST) ceramics doped with MgO is studied in this work. Samples prepared with agate milling media show negligible solubility of MgO in ST. Instead, MgO was present in a SiO₂ rich phase at the grain boundaries. For some compositions containing this phase, a dielectric permittivity peak was present at low temperatures associated with an extra Raman vibrational mode. In contrast, samples prepared with teflon pots and ZrO₂ media exhibit a higher solid solubility limit of Mg in ST, absence of second phase at the grain boundaries and no dielectric anomaly at low temperatures for the same batched compositions.

Original language	English
Pages (from-to)	40-44
Number of pages	5
Journal	Materials Science Forum
Volume	455-456
Publication status	Published - 2004
Externally published	Yes
Event	Advanced Materials Forum II: Proceedings of the II International Materials Symposium: Materials 2003 and XI Encontro da Sociedade Portugesa de Materials, 2003 ATERIAIS - Caparica, Portugal Duration: 14 Apr 2003 → 16 Apr 2003

Keywords

Dielectric ceramics
Doping
Materials processing
SrTiO
Structure

Cite this

@article{4de068a39d274b33bc15f5a6c63f6d5c,

title = "Structural and dielectric properties of Mg-doped strontium tltanate ceramics: Dependence on the materials processing",

abstract = "The effect of materials processing on structural and low-frequency dielectric properties of SrTiO3 (ST) ceramics doped with MgO is studied in this work. Samples prepared with agate milling media show negligible solubility of MgO in ST. Instead, MgO was present in a SiO2 rich phase at the grain boundaries. For some compositions containing this phase, a dielectric permittivity peak was present at low temperatures associated with an extra Raman vibrational mode. In contrast, samples prepared with teflon pots and ZrO2 media exhibit a higher solid solubility limit of Mg in ST, absence of second phase at the grain boundaries and no dielectric anomaly at low temperatures for the same batched compositions.",

keywords = "Dielectric ceramics, Doping, Materials processing, SrTiO, Structure",

author = "A. Tkach and Vilarinho, \{P. M.\} and A. Kholkin and Reaney, \{Ian M.\} and Jan Petzelt",

year = "2004",

language = "English",

volume = "455-456",

pages = "40--44",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications Ltd",

note = "Advanced Materials Forum II: Proceedings of the II International Materials Symposium: Materials 2003 and XI Encontro da Sociedade Portugesa de Materials, 2003 ATERIAIS ; Conference date: 14-04-2003 Through 16-04-2003",

}

TY - JOUR

T1 - Structural and dielectric properties of Mg-doped strontium tltanate ceramics

T2 - Advanced Materials Forum II: Proceedings of the II International Materials Symposium: Materials 2003 and XI Encontro da Sociedade Portugesa de Materials, 2003 ATERIAIS

AU - Tkach, A.

AU - Vilarinho, P. M.

AU - Kholkin, A.

AU - Reaney, Ian M.

AU - Petzelt, Jan

PY - 2004

Y1 - 2004

N2 - The effect of materials processing on structural and low-frequency dielectric properties of SrTiO3 (ST) ceramics doped with MgO is studied in this work. Samples prepared with agate milling media show negligible solubility of MgO in ST. Instead, MgO was present in a SiO2 rich phase at the grain boundaries. For some compositions containing this phase, a dielectric permittivity peak was present at low temperatures associated with an extra Raman vibrational mode. In contrast, samples prepared with teflon pots and ZrO2 media exhibit a higher solid solubility limit of Mg in ST, absence of second phase at the grain boundaries and no dielectric anomaly at low temperatures for the same batched compositions.

AB - The effect of materials processing on structural and low-frequency dielectric properties of SrTiO3 (ST) ceramics doped with MgO is studied in this work. Samples prepared with agate milling media show negligible solubility of MgO in ST. Instead, MgO was present in a SiO2 rich phase at the grain boundaries. For some compositions containing this phase, a dielectric permittivity peak was present at low temperatures associated with an extra Raman vibrational mode. In contrast, samples prepared with teflon pots and ZrO2 media exhibit a higher solid solubility limit of Mg in ST, absence of second phase at the grain boundaries and no dielectric anomaly at low temperatures for the same batched compositions.

KW - Dielectric ceramics

KW - Doping

KW - Materials processing

KW - SrTiO

KW - Structure

UR - https://www.scopus.com/pages/publications/3142678675

M3 - Conference article

AN - SCOPUS:3142678675

SN - 0255-5476

VL - 455-456

SP - 40

EP - 44

JO - Materials Science Forum

JF - Materials Science Forum

Y2 - 14 April 2003 through 16 April 2003

ER -

Structural and dielectric properties of Mg-doped strontium tltanate ceramics: Dependence on the materials processing

Abstract

Keywords

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