Electrical properties of fluorine-intercalated layered manganite: La1.4Sr1.6Mn2O7F2

Ankam Bhaskar, C. S. Sheu, Chia Jyi Liu

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Fluorinating agent NH4F is employed to intercalate the bi-layered manganite La1.4Sr1.6Mn2O7 to form La1.4Sr1.6Mn2O7F2 using solid state reaction. The insertion of fluorine results in a contraction of ∼0.116 Å in the a axis and an expansion of ∼3.152 Å in the c axis with respect to the parent compound La1.4Sr1.6Mn2O7. The Mn-O bond lengths are altered due to the electrostatic repulsion between O2- and F-. Rietveld analysis indicates that a longer bond length of Mn-O(1) and shorter bond lengths of Mn-O(2) and Mn-O(3) has been found in La1.4Sr1.6Mn2O7F2 when compared to La1.4Sr1.6Mn2O7. The electrical resistivity of La1.4Sr1.6Mn2O7F2 shows insulating behavior and exhibits remarkably different behavior from La1.4Sr1.6Mn2O7. For the first time, we report the temperature dependence of electrical resistivity of La1.4Sr1.6Mn2O7F2. Magnetic measurements indicate that the magnetic order of local moments is suppressed by fluorine insertion into interstitial sites.

Original languageEnglish
Pages (from-to)324-327
Number of pages4
JournalJournal of Alloys and Compounds
Volume623
DOIs
Publication statusPublished - 2015 Feb 25

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Fluorine
Bond length
Electric properties
Rietveld analysis
Magnetic variables measurement
Solid state reactions
Electrostatics
manganite
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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title = "Electrical properties of fluorine-intercalated layered manganite: La1.4Sr1.6Mn2O7F2",
abstract = "Fluorinating agent NH4F is employed to intercalate the bi-layered manganite La1.4Sr1.6Mn2O7 to form La1.4Sr1.6Mn2O7F2 using solid state reaction. The insertion of fluorine results in a contraction of ∼0.116 {\AA} in the a axis and an expansion of ∼3.152 {\AA} in the c axis with respect to the parent compound La1.4Sr1.6Mn2O7. The Mn-O bond lengths are altered due to the electrostatic repulsion between O2- and F-. Rietveld analysis indicates that a longer bond length of Mn-O(1) and shorter bond lengths of Mn-O(2) and Mn-O(3) has been found in La1.4Sr1.6Mn2O7F2 when compared to La1.4Sr1.6Mn2O7. The electrical resistivity of La1.4Sr1.6Mn2O7F2 shows insulating behavior and exhibits remarkably different behavior from La1.4Sr1.6Mn2O7. For the first time, we report the temperature dependence of electrical resistivity of La1.4Sr1.6Mn2O7F2. Magnetic measurements indicate that the magnetic order of local moments is suppressed by fluorine insertion into interstitial sites.",
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Electrical properties of fluorine-intercalated layered manganite : La1.4Sr1.6Mn2O7F2. / Bhaskar, Ankam; Sheu, C. S.; Liu, Chia Jyi.

In: Journal of Alloys and Compounds, Vol. 623, 25.02.2015, p. 324-327.

Research output: Contribution to journalArticle

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T2 - La1.4Sr1.6Mn2O7F2

AU - Bhaskar, Ankam

AU - Sheu, C. S.

AU - Liu, Chia Jyi

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AB - Fluorinating agent NH4F is employed to intercalate the bi-layered manganite La1.4Sr1.6Mn2O7 to form La1.4Sr1.6Mn2O7F2 using solid state reaction. The insertion of fluorine results in a contraction of ∼0.116 Å in the a axis and an expansion of ∼3.152 Å in the c axis with respect to the parent compound La1.4Sr1.6Mn2O7. The Mn-O bond lengths are altered due to the electrostatic repulsion between O2- and F-. Rietveld analysis indicates that a longer bond length of Mn-O(1) and shorter bond lengths of Mn-O(2) and Mn-O(3) has been found in La1.4Sr1.6Mn2O7F2 when compared to La1.4Sr1.6Mn2O7. The electrical resistivity of La1.4Sr1.6Mn2O7F2 shows insulating behavior and exhibits remarkably different behavior from La1.4Sr1.6Mn2O7. For the first time, we report the temperature dependence of electrical resistivity of La1.4Sr1.6Mn2O7F2. Magnetic measurements indicate that the magnetic order of local moments is suppressed by fluorine insertion into interstitial sites.

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