Structural, transport, and magnetic properties of the nd1-xaxtio3 (a = ca, sr, ba) system where 0 ≤ x ≤ 1

C. Eylem, H. L. Ju, B. W. Eichhorn, R. L. Greene

Research output: Contribution to journalArticle

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Abstract

A series of perovskite Nd1-xAxTiO3 (A = Ca, Sr, Ba) compounds has been prepared by the dc-arc melting technique in the composition range 0 ≤ x ≤ ∼1.0. The substitution of Sr and Ba in NdTiO3 results in structural phase transitions from orthorhombic (Pbnm) to cubic (Pm3m). The Nd1-xCaxTiO3 series remains orthorhombic throughout the range studied. Low field magnetic susceptibility measurements and remanent magnetic moment studies suggest that the Ti sublattice in the insulating Nd1-xAxTiO3 compounds (0 ≤ x ≤ ∼0.2) orders as canted antiferromagnets. The Nd1-xAxTiO3 compounds show compositionally dependent metal-insulator transitions that coincide with the disappearance of the magnetic ordering. The correlations between the structure and transport properties are discussed in terms of the Ti-O-Ti angle and Ti-O bond distance. The perovskite tolerance factor, t, is also shown to be a useful parameter to sort insulating and metallic phases in these compounds.

Original languageEnglish
Pages (from-to)164-173
Number of pages10
JournalJournal of Solid State Chemistry
Volume114
Issue number1
DOIs
Publication statusPublished - 1995 Jan 1

Fingerprint

Perovskite
Transport properties
Structural properties
Magnetic properties
transport properties
magnetic properties
arc melting
Metal insulator transition
Magnetic moments
Magnetic susceptibility
sublattices
Magnetization
Melting
Substitution reactions
magnetic moments
Phase transitions
insulators
substitutes
magnetic permeability
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

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abstract = "A series of perovskite Nd1-xAxTiO3 (A = Ca, Sr, Ba) compounds has been prepared by the dc-arc melting technique in the composition range 0 ≤ x ≤ ∼1.0. The substitution of Sr and Ba in NdTiO3 results in structural phase transitions from orthorhombic (Pbnm) to cubic (Pm3m). The Nd1-xCaxTiO3 series remains orthorhombic throughout the range studied. Low field magnetic susceptibility measurements and remanent magnetic moment studies suggest that the Ti sublattice in the insulating Nd1-xAxTiO3 compounds (0 ≤ x ≤ ∼0.2) orders as canted antiferromagnets. The Nd1-xAxTiO3 compounds show compositionally dependent metal-insulator transitions that coincide with the disappearance of the magnetic ordering. The correlations between the structure and transport properties are discussed in terms of the Ti-O-Ti angle and Ti-O bond distance. The perovskite tolerance factor, t, is also shown to be a useful parameter to sort insulating and metallic phases in these compounds.",
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Structural, transport, and magnetic properties of the nd1-xaxtio3 (a = ca, sr, ba) system where 0 ≤ x ≤ 1. / Eylem, C.; Ju, H. L.; Eichhorn, B. W.; Greene, R. L.

In: Journal of Solid State Chemistry, Vol. 114, No. 1, 01.01.1995, p. 164-173.

Research output: Contribution to journalArticle

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AU - Ju, H. L.

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N2 - A series of perovskite Nd1-xAxTiO3 (A = Ca, Sr, Ba) compounds has been prepared by the dc-arc melting technique in the composition range 0 ≤ x ≤ ∼1.0. The substitution of Sr and Ba in NdTiO3 results in structural phase transitions from orthorhombic (Pbnm) to cubic (Pm3m). The Nd1-xCaxTiO3 series remains orthorhombic throughout the range studied. Low field magnetic susceptibility measurements and remanent magnetic moment studies suggest that the Ti sublattice in the insulating Nd1-xAxTiO3 compounds (0 ≤ x ≤ ∼0.2) orders as canted antiferromagnets. The Nd1-xAxTiO3 compounds show compositionally dependent metal-insulator transitions that coincide with the disappearance of the magnetic ordering. The correlations between the structure and transport properties are discussed in terms of the Ti-O-Ti angle and Ti-O bond distance. The perovskite tolerance factor, t, is also shown to be a useful parameter to sort insulating and metallic phases in these compounds.

AB - A series of perovskite Nd1-xAxTiO3 (A = Ca, Sr, Ba) compounds has been prepared by the dc-arc melting technique in the composition range 0 ≤ x ≤ ∼1.0. The substitution of Sr and Ba in NdTiO3 results in structural phase transitions from orthorhombic (Pbnm) to cubic (Pm3m). The Nd1-xCaxTiO3 series remains orthorhombic throughout the range studied. Low field magnetic susceptibility measurements and remanent magnetic moment studies suggest that the Ti sublattice in the insulating Nd1-xAxTiO3 compounds (0 ≤ x ≤ ∼0.2) orders as canted antiferromagnets. The Nd1-xAxTiO3 compounds show compositionally dependent metal-insulator transitions that coincide with the disappearance of the magnetic ordering. The correlations between the structure and transport properties are discussed in terms of the Ti-O-Ti angle and Ti-O bond distance. The perovskite tolerance factor, t, is also shown to be a useful parameter to sort insulating and metallic phases in these compounds.

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