A monoclinic ferroelectric phase in the Pb(Zr{sub 1{minus}x}Ti{sub x})O{sub 3} solid solution

Journal Article · Thu Apr 01 04:00:00 EST 1999 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.123756· OSTI ID:340410

Noheda, B; Cox, D E; Shirane, G ^[1]; Gonzalo, J A ^[2]; Cross, L E; Park, S ^[3]

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1. Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
2. Dept. Fisica de Materiales, U.A.M., Cantoblanco, 28049-Madrid (Spain)
3. Materials Research Laboratory, The Pennsylvania State University, Pennsylvania 16802-4800 (United States)

A previously unreported ferroelectric phase has been discovered in a highly homogeneous sample of PbZr{sub 0.52}Ti{sub 0.48}O{sub 3} by high-resolution synchrotron x-ray powder diffraction measurements. At ambient temperature the sample has tetragonal symmetry (a{sub t}=4.037{Angstrom}, c{sub t}=4.138{Angstrom}), and transforms below {approximately}250 K into a phase which, unexpectedly, has monoclinic symmetry (a{sub m}=5.717{Angstrom}, b{sub m}=5.703{Angstrom}, c{sub m}=4.143{Angstrom}, {beta}=90.53{degree}, at 20 K). The intensity data strongly indicate that the polar axis lies in the monoclinic {ital ac} plane close to the pseudocubic [111] direction, which would be an example of the species m3m(12)A2Fm predicted on symmetry grounds by Shuvalov. {copyright} {ital 1999 American Institute of Physics.}

• OSTI ID: 340410
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 14 Vol. 74; ISSN 0003-6951; ISSN APPLAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
CRYSTAL STRUCTURE
FERROELECTRIC MATERIALS
LEAD COMPOUNDS
MONOCLINIC LATTICES
NSLS
PHASE DIAGRAMS
PZT
SOLID SOLUTIONS
SYNCHROTRON RADIATION
TITANIUM OXIDES
X-RAY DIFFRACTION