Processing control of phase separation, cation ordering, and the dielectric properties of Ba3 (Co0.6 Zn0.4) Nb2 O9

P. M. Mallinson; M. J. Rosseinsky; R. M. Ibberson; T. Price; D. M. Iddles

doi:10.1063/1.2785987

Processing control of phase separation, cation ordering, and the dielectric properties of Ba3 (Co0.6 Zn0.4) Nb2 O9

P. M. Mallinson, M. J. Rosseinsky, R. M. Ibberson, T. Price, D. M. Iddles

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

12 Scopus citations

Abstract

The dielectric and crystallographic properties of the ceramic Ba3 (Co0.6 Zn0.4) Nb2 O9 have been investigated in relation to the processing schedule. Regimes incorporating slow cooling or a lower-temperature annealing stage are found to enhance the dielectric properties with the unloaded quality factor value increasing up to Qu =24 300 at 3.21 GHz, as compared with Qu =14 425 at 3.21 GHz using the standard schedule, while high relative permittivity εr =34 is retained. High-resolution neutron powder diffraction studies reveal the materials to be biphasic assemblages of trigonal perovskites which exhibit varying degrees of cation order. The higher Q samples are found to contain the highest proportion of the fully cation-ordered phase.

Original language	English
Article number	142906
Journal	Applied Physics Letters
Volume	91
Issue number	14
DOIs	https://doi.org/10.1063/1.2785987
State	Published - 2007
Externally published	Yes

Access to Document

10.1063/1.2785987

Cite this

@article{64651ad099b14c469c3ebdf8d38f7c13,

title = "Processing control of phase separation, cation ordering, and the dielectric properties of Ba3 (Co0.6 Zn0.4) Nb2 O9",

abstract = "The dielectric and crystallographic properties of the ceramic Ba3 (Co0.6 Zn0.4) Nb2 O9 have been investigated in relation to the processing schedule. Regimes incorporating slow cooling or a lower-temperature annealing stage are found to enhance the dielectric properties with the unloaded quality factor value increasing up to Qu =24 300 at 3.21 GHz, as compared with Qu =14 425 at 3.21 GHz using the standard schedule, while high relative permittivity εr =34 is retained. High-resolution neutron powder diffraction studies reveal the materials to be biphasic assemblages of trigonal perovskites which exhibit varying degrees of cation order. The higher Q samples are found to contain the highest proportion of the fully cation-ordered phase.",

author = "Mallinson, {P. M.} and Rosseinsky, {M. J.} and Ibberson, {R. M.} and T. Price and Iddles, {D. M.}",

year = "2007",

doi = "10.1063/1.2785987",

language = "English",

volume = "91",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "14",

}

TY - JOUR

T1 - Processing control of phase separation, cation ordering, and the dielectric properties of Ba3 (Co0.6 Zn0.4) Nb2 O9

AU - Mallinson, P. M.

AU - Rosseinsky, M. J.

AU - Ibberson, R. M.

AU - Price, T.

AU - Iddles, D. M.

PY - 2007

Y1 - 2007

N2 - The dielectric and crystallographic properties of the ceramic Ba3 (Co0.6 Zn0.4) Nb2 O9 have been investigated in relation to the processing schedule. Regimes incorporating slow cooling or a lower-temperature annealing stage are found to enhance the dielectric properties with the unloaded quality factor value increasing up to Qu =24 300 at 3.21 GHz, as compared with Qu =14 425 at 3.21 GHz using the standard schedule, while high relative permittivity εr =34 is retained. High-resolution neutron powder diffraction studies reveal the materials to be biphasic assemblages of trigonal perovskites which exhibit varying degrees of cation order. The higher Q samples are found to contain the highest proportion of the fully cation-ordered phase.

AB - The dielectric and crystallographic properties of the ceramic Ba3 (Co0.6 Zn0.4) Nb2 O9 have been investigated in relation to the processing schedule. Regimes incorporating slow cooling or a lower-temperature annealing stage are found to enhance the dielectric properties with the unloaded quality factor value increasing up to Qu =24 300 at 3.21 GHz, as compared with Qu =14 425 at 3.21 GHz using the standard schedule, while high relative permittivity εr =34 is retained. High-resolution neutron powder diffraction studies reveal the materials to be biphasic assemblages of trigonal perovskites which exhibit varying degrees of cation order. The higher Q samples are found to contain the highest proportion of the fully cation-ordered phase.

UR - http://www.scopus.com/inward/record.url?scp=34948864527&partnerID=8YFLogxK

U2 - 10.1063/1.2785987

DO - 10.1063/1.2785987

M3 - Article

AN - SCOPUS:34948864527

SN - 0003-6951

VL - 91

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 14

M1 - 142906

ER -

Processing control of phase separation, cation ordering, and the dielectric properties of Ba3 (Co0.6 Zn0.4) Nb2 O9

Abstract

Access to Document

Other files and links

Fingerprint

Cite this