X-ray diffraction analysis of lanthanum and titanium substituted lead zirconate

Nichole Wonderling, Else Breval, Joseph P. Dougherty

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The change in the orthorhombic structure of PbZrO3 was studied as a function of the La substitution for Pb and Ti substitution for Zr. Two types of changes can occur: (1) a change in the atom coordinates toward the positions for a perfect cubic perovskite lattice; and (2) a change of orthorhombic unit cell parameters so that ao, bo, and co exactly fit with the cubic cell parameter ac. Therefore, ao = ac√2, bo = ac 2√2, and co = a c2, where ao, bo, and co are the orthorhombic cell parameters, and ac is the cubic cell parameter. Substitution of Pb by La in the orthorhombic PLZT leads to both a change in atom coordinates and a change in unit cell parameters toward the perfect cubic structure, especially for La≥4. Substitution of Zr by Ti in the orthorhombic PLZT leads to similar atom coordinate changes, but the unit cell parameters do not change. The composition 0/92.5/7.5 contains a major tetragonal phase and a minor orthorhombic phase. There are only small differences in the orthorhombic structure between the A and the B composition of PLZT. The A composition has a structure closer to the cubic structure than the B composition.

Original languageEnglish (US)
Pages (from-to)295-300
Number of pages6
JournalPowder Diffraction
Volume17
Issue number4
DOIs
StatePublished - Dec 1 2002

Fingerprint

Lanthanum
Titanium
lanthanum
X ray diffraction analysis
Substitution reactions
titanium
cells
Chemical analysis
diffraction
Atoms
substitutes
x rays
Perovskite
atoms
cubic lattices

All Science Journal Classification (ASJC) codes

  • Radiation
  • Materials Science(all)
  • Instrumentation
  • Condensed Matter Physics

Cite this

Wonderling, Nichole ; Breval, Else ; Dougherty, Joseph P. / X-ray diffraction analysis of lanthanum and titanium substituted lead zirconate. In: Powder Diffraction. 2002 ; Vol. 17, No. 4. pp. 295-300.
@article{2036cc317fe74653b2adacf45368cc8d,
title = "X-ray diffraction analysis of lanthanum and titanium substituted lead zirconate",
abstract = "The change in the orthorhombic structure of PbZrO3 was studied as a function of the La substitution for Pb and Ti substitution for Zr. Two types of changes can occur: (1) a change in the atom coordinates toward the positions for a perfect cubic perovskite lattice; and (2) a change of orthorhombic unit cell parameters so that ao, bo, and co exactly fit with the cubic cell parameter ac. Therefore, ao = ac√2, bo = ac 2√2, and co = a c2, where ao, bo, and co are the orthorhombic cell parameters, and ac is the cubic cell parameter. Substitution of Pb by La in the orthorhombic PLZT leads to both a change in atom coordinates and a change in unit cell parameters toward the perfect cubic structure, especially for La≥4. Substitution of Zr by Ti in the orthorhombic PLZT leads to similar atom coordinate changes, but the unit cell parameters do not change. The composition 0/92.5/7.5 contains a major tetragonal phase and a minor orthorhombic phase. There are only small differences in the orthorhombic structure between the A and the B composition of PLZT. The A composition has a structure closer to the cubic structure than the B composition.",
author = "Nichole Wonderling and Else Breval and Dougherty, {Joseph P.}",
year = "2002",
month = "12",
day = "1",
doi = "10.1154/1.1505046",
language = "English (US)",
volume = "17",
pages = "295--300",
journal = "Powder Diffraction",
issn = "0885-7156",
publisher = "International Centre For Diffraction Data",
number = "4",

}

X-ray diffraction analysis of lanthanum and titanium substituted lead zirconate. / Wonderling, Nichole; Breval, Else; Dougherty, Joseph P.

In: Powder Diffraction, Vol. 17, No. 4, 01.12.2002, p. 295-300.

Research output: Contribution to journalArticle

TY - JOUR

T1 - X-ray diffraction analysis of lanthanum and titanium substituted lead zirconate

AU - Wonderling, Nichole

AU - Breval, Else

AU - Dougherty, Joseph P.

PY - 2002/12/1

Y1 - 2002/12/1

N2 - The change in the orthorhombic structure of PbZrO3 was studied as a function of the La substitution for Pb and Ti substitution for Zr. Two types of changes can occur: (1) a change in the atom coordinates toward the positions for a perfect cubic perovskite lattice; and (2) a change of orthorhombic unit cell parameters so that ao, bo, and co exactly fit with the cubic cell parameter ac. Therefore, ao = ac√2, bo = ac 2√2, and co = a c2, where ao, bo, and co are the orthorhombic cell parameters, and ac is the cubic cell parameter. Substitution of Pb by La in the orthorhombic PLZT leads to both a change in atom coordinates and a change in unit cell parameters toward the perfect cubic structure, especially for La≥4. Substitution of Zr by Ti in the orthorhombic PLZT leads to similar atom coordinate changes, but the unit cell parameters do not change. The composition 0/92.5/7.5 contains a major tetragonal phase and a minor orthorhombic phase. There are only small differences in the orthorhombic structure between the A and the B composition of PLZT. The A composition has a structure closer to the cubic structure than the B composition.

AB - The change in the orthorhombic structure of PbZrO3 was studied as a function of the La substitution for Pb and Ti substitution for Zr. Two types of changes can occur: (1) a change in the atom coordinates toward the positions for a perfect cubic perovskite lattice; and (2) a change of orthorhombic unit cell parameters so that ao, bo, and co exactly fit with the cubic cell parameter ac. Therefore, ao = ac√2, bo = ac 2√2, and co = a c2, where ao, bo, and co are the orthorhombic cell parameters, and ac is the cubic cell parameter. Substitution of Pb by La in the orthorhombic PLZT leads to both a change in atom coordinates and a change in unit cell parameters toward the perfect cubic structure, especially for La≥4. Substitution of Zr by Ti in the orthorhombic PLZT leads to similar atom coordinate changes, but the unit cell parameters do not change. The composition 0/92.5/7.5 contains a major tetragonal phase and a minor orthorhombic phase. There are only small differences in the orthorhombic structure between the A and the B composition of PLZT. The A composition has a structure closer to the cubic structure than the B composition.

UR - http://www.scopus.com/inward/record.url?scp=0036946242&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036946242&partnerID=8YFLogxK

U2 - 10.1154/1.1505046

DO - 10.1154/1.1505046

M3 - Article

AN - SCOPUS:0036946242

VL - 17

SP - 295

EP - 300

JO - Powder Diffraction

JF - Powder Diffraction

SN - 0885-7156

IS - 4

ER -