Na2Ln2Ti3-xMnxO10 (Ln = Sm, Eu, Gd, and Dy; 0 ≤, x ≤ 1)

A new series of ion-exchangeable layered perovskites containing B-site manganese

Raymond Edward Schaak, Dawood Afzal, Joshua A. Schottenfeld, Thomas E. Mallouk

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Na2Ln2Ti3-xMnxO10 (Ln = Sm, Eu, Gd, and Dy; 0 ≤ x ≤ 1), a new series of triple-layer Ruddlesden-Popper phases, were synthesized by direct solid-state reaction. The smaller lanthanides enhance manganese solubility in the parent titanate, and an optimized synthetic approach allows Na2Ln2Ti3-xMnxO10 to be stabilized relative to competing single-layer and cubic phases. The X-ray diffraction patterns of Na2Ln2Ti3-xMnxO10 can be indexed on a tetragonal unit cell with a doubled a axis. The Na2Ln2Ti3-xMnxO10 phases undergo ion exchange, forming A2Ln2Ti3-xMnxO10 (A = Li, NH4) by exchange in the molten nitrates. Na2Ln2Ti3-xMnxO10 is also amenable to divalent ion exchange, evidenced by the formation of AIIGd2Ti2MnO10 (AII = Mg, Ca) by ion exchange in aqueous MgCl2 and Ca(NO3)2, respectively. Temperature-dependent magnetic susceptibility measurements indicate that the Na2Ln2Ti3-xMnxO10 phases are paramagnetic and suggest the onset of weak magnetic ordering at low temperatures (<10 K).

Original languageEnglish (US)
Pages (from-to)442-448
Number of pages7
JournalChemistry of Materials
Volume14
Issue number1
DOIs
StatePublished - Mar 25 2002

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Manganese
Ion exchange
Ions
Lanthanoid Series Elements
Magnesium Chloride
Rare earth elements
Solid state reactions
Magnetic susceptibility
Nitrates
Diffraction patterns
Molten materials
Magnetization
Solubility
X ray diffraction
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

@article{e5e08b13921748f480931249637515f1,
title = "Na2Ln2Ti3-xMnxO10 (Ln = Sm, Eu, Gd, and Dy; 0 ≤, x ≤ 1): A new series of ion-exchangeable layered perovskites containing B-site manganese",
abstract = "Na2Ln2Ti3-xMnxO10 (Ln = Sm, Eu, Gd, and Dy; 0 ≤ x ≤ 1), a new series of triple-layer Ruddlesden-Popper phases, were synthesized by direct solid-state reaction. The smaller lanthanides enhance manganese solubility in the parent titanate, and an optimized synthetic approach allows Na2Ln2Ti3-xMnxO10 to be stabilized relative to competing single-layer and cubic phases. The X-ray diffraction patterns of Na2Ln2Ti3-xMnxO10 can be indexed on a tetragonal unit cell with a doubled a axis. The Na2Ln2Ti3-xMnxO10 phases undergo ion exchange, forming A2Ln2Ti3-xMnxO10 (A = Li, NH4) by exchange in the molten nitrates. Na2Ln2Ti3-xMnxO10 is also amenable to divalent ion exchange, evidenced by the formation of AIIGd2Ti2MnO10 (AII = Mg, Ca) by ion exchange in aqueous MgCl2 and Ca(NO3)2, respectively. Temperature-dependent magnetic susceptibility measurements indicate that the Na2Ln2Ti3-xMnxO10 phases are paramagnetic and suggest the onset of weak magnetic ordering at low temperatures (<10 K).",
author = "Schaak, {Raymond Edward} and Dawood Afzal and Schottenfeld, {Joshua A.} and Mallouk, {Thomas E.}",
year = "2002",
month = "3",
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doi = "10.1021/cm010734q",
language = "English (US)",
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journal = "Chemistry of Materials",
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publisher = "American Chemical Society",
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}

Na2Ln2Ti3-xMnxO10 (Ln = Sm, Eu, Gd, and Dy; 0 ≤, x ≤ 1) : A new series of ion-exchangeable layered perovskites containing B-site manganese. / Schaak, Raymond Edward; Afzal, Dawood; Schottenfeld, Joshua A.; Mallouk, Thomas E.

In: Chemistry of Materials, Vol. 14, No. 1, 25.03.2002, p. 442-448.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Na2Ln2Ti3-xMnxO10 (Ln = Sm, Eu, Gd, and Dy; 0 ≤, x ≤ 1)

T2 - A new series of ion-exchangeable layered perovskites containing B-site manganese

AU - Schaak, Raymond Edward

AU - Afzal, Dawood

AU - Schottenfeld, Joshua A.

AU - Mallouk, Thomas E.

PY - 2002/3/25

Y1 - 2002/3/25

N2 - Na2Ln2Ti3-xMnxO10 (Ln = Sm, Eu, Gd, and Dy; 0 ≤ x ≤ 1), a new series of triple-layer Ruddlesden-Popper phases, were synthesized by direct solid-state reaction. The smaller lanthanides enhance manganese solubility in the parent titanate, and an optimized synthetic approach allows Na2Ln2Ti3-xMnxO10 to be stabilized relative to competing single-layer and cubic phases. The X-ray diffraction patterns of Na2Ln2Ti3-xMnxO10 can be indexed on a tetragonal unit cell with a doubled a axis. The Na2Ln2Ti3-xMnxO10 phases undergo ion exchange, forming A2Ln2Ti3-xMnxO10 (A = Li, NH4) by exchange in the molten nitrates. Na2Ln2Ti3-xMnxO10 is also amenable to divalent ion exchange, evidenced by the formation of AIIGd2Ti2MnO10 (AII = Mg, Ca) by ion exchange in aqueous MgCl2 and Ca(NO3)2, respectively. Temperature-dependent magnetic susceptibility measurements indicate that the Na2Ln2Ti3-xMnxO10 phases are paramagnetic and suggest the onset of weak magnetic ordering at low temperatures (<10 K).

AB - Na2Ln2Ti3-xMnxO10 (Ln = Sm, Eu, Gd, and Dy; 0 ≤ x ≤ 1), a new series of triple-layer Ruddlesden-Popper phases, were synthesized by direct solid-state reaction. The smaller lanthanides enhance manganese solubility in the parent titanate, and an optimized synthetic approach allows Na2Ln2Ti3-xMnxO10 to be stabilized relative to competing single-layer and cubic phases. The X-ray diffraction patterns of Na2Ln2Ti3-xMnxO10 can be indexed on a tetragonal unit cell with a doubled a axis. The Na2Ln2Ti3-xMnxO10 phases undergo ion exchange, forming A2Ln2Ti3-xMnxO10 (A = Li, NH4) by exchange in the molten nitrates. Na2Ln2Ti3-xMnxO10 is also amenable to divalent ion exchange, evidenced by the formation of AIIGd2Ti2MnO10 (AII = Mg, Ca) by ion exchange in aqueous MgCl2 and Ca(NO3)2, respectively. Temperature-dependent magnetic susceptibility measurements indicate that the Na2Ln2Ti3-xMnxO10 phases are paramagnetic and suggest the onset of weak magnetic ordering at low temperatures (<10 K).

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SN - 0897-4756

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