HT-solution growth and characterisation of InxNaxMn1-2xWO4 (0<x≤0.26)

U. Gattermann; S. H. Park; C. Paulmann; G. Benka; C. Pfleiderer

doi:10.1016/j.jssc.2016.09.022

HT-solution growth and characterisation of In_xNa_xMn_1-2xWO₄ (0<x≤0.26)

U. Gattermann
, S. H. Park
, C. Paulmann
, G. Benka
, C. Pfleiderer

Chair of Experimental Physics on the Topology of Correlated Systems

Ludwig-Maximilians-Universität München
Universität Hamburg
Technical University of Munich

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

A new solid solution system, In_xNa_xMn_1–2xWO₄ (0<x=≤0.26) belonging to the MnWO₄-type multiferroics was investigated. Large single crystals were grown up to several mm in length from high-temperature oxide solutions using a solvent mixture of Na₂WO₄ and Na₂W₂O₇. Quantitative doping degrees were analyzed by means of electron microprobe. Single crystal X-ray diffraction studies agreed with the polar space group P2 for In_xNa_xMn_1–2xWO₄. The complexity of partial (Na⁺/Mn²⁺)- and (In³⁺/Mn²⁺)-ordering makes their atomic sites unique, explaining the dissymmetrization from P2/c down to P2. This is also valid for the InNaW₂O₈-type Mn_2yIn_1-yNa_1-yW₂O₈ solid solution found as co-product in this study. Specific heat and magnetisation measurements showed a paramagnetic dilution effect from (In³⁺/Na⁺)-doping while lowering the transition temperature for the multiferroic phase AF2 of In_xNa_xMn_1–2xWO₄ with respect to the prototype MnWO₄.

Original language	English
Pages (from-to)	140-150
Number of pages	11
Journal	Journal of Solid State Chemistry
Volume	244
DOIs	https://doi.org/10.1016/j.jssc.2016.09.022
State	Published - 1 Dec 2016

Keywords

(In/Na)-doping
Magnetization
MnWO
Multiferroics
Polar structure
X-ray diffraction

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10.1016/j.jssc.2016.09.022

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title = "HT-solution growth and characterisation of InxNaxMn1-2xWO4 (0",

abstract = "A new solid solution system, InxNaxMn1{\textendash}2xWO4 (04-type multiferroics was investigated. Large single crystals were grown up to several mm in length from high-temperature oxide solutions using a solvent mixture of Na2WO4 and Na2W2O7. Quantitative doping degrees were analyzed by means of electron microprobe. Single crystal X-ray diffraction studies agreed with the polar space group P2 for InxNaxMn1{\textendash}2xWO4. The complexity of partial (Na+/Mn2+)- and (In3+/Mn2+)-ordering makes their atomic sites unique, explaining the dissymmetrization from P2/c down to P2. This is also valid for the InNaW2O8-type Mn2yIn1-yNa1-yW2O8 solid solution found as co-product in this study. Specific heat and magnetisation measurements showed a paramagnetic dilution effect from (In3+/Na+)-doping while lowering the transition temperature for the multiferroic phase AF2 of InxNaxMn1{\textendash}2xWO4 with respect to the prototype MnWO4.",

keywords = "(In/Na)-doping, Magnetization, MnWO, Multiferroics, Polar structure, X-ray diffraction",

author = "U. Gattermann and Park, \{S. H.\} and C. Paulmann and G. Benka and C. Pfleiderer",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Inc.",

year = "2016",

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day = "1",

doi = "10.1016/j.jssc.2016.09.022",

language = "English",

volume = "244",

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T1 - HT-solution growth and characterisation of InxNaxMn1-2xWO4 (0

AU - Gattermann, U.

AU - Park, S. H.

AU - Paulmann, C.

AU - Benka, G.

AU - Pfleiderer, C.

PY - 2016/12/1

Y1 - 2016/12/1

N2 - A new solid solution system, InxNaxMn1–2xWO4 (04-type multiferroics was investigated. Large single crystals were grown up to several mm in length from high-temperature oxide solutions using a solvent mixture of Na2WO4 and Na2W2O7. Quantitative doping degrees were analyzed by means of electron microprobe. Single crystal X-ray diffraction studies agreed with the polar space group P2 for InxNaxMn1–2xWO4. The complexity of partial (Na+/Mn2+)- and (In3+/Mn2+)-ordering makes their atomic sites unique, explaining the dissymmetrization from P2/c down to P2. This is also valid for the InNaW2O8-type Mn2yIn1-yNa1-yW2O8 solid solution found as co-product in this study. Specific heat and magnetisation measurements showed a paramagnetic dilution effect from (In3+/Na+)-doping while lowering the transition temperature for the multiferroic phase AF2 of InxNaxMn1–2xWO4 with respect to the prototype MnWO4.

AB - A new solid solution system, InxNaxMn1–2xWO4 (04-type multiferroics was investigated. Large single crystals were grown up to several mm in length from high-temperature oxide solutions using a solvent mixture of Na2WO4 and Na2W2O7. Quantitative doping degrees were analyzed by means of electron microprobe. Single crystal X-ray diffraction studies agreed with the polar space group P2 for InxNaxMn1–2xWO4. The complexity of partial (Na+/Mn2+)- and (In3+/Mn2+)-ordering makes their atomic sites unique, explaining the dissymmetrization from P2/c down to P2. This is also valid for the InNaW2O8-type Mn2yIn1-yNa1-yW2O8 solid solution found as co-product in this study. Specific heat and magnetisation measurements showed a paramagnetic dilution effect from (In3+/Na+)-doping while lowering the transition temperature for the multiferroic phase AF2 of InxNaxMn1–2xWO4 with respect to the prototype MnWO4.

KW - (In/Na)-doping

KW - Magnetization

KW - MnWO

KW - Multiferroics

KW - Polar structure

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/84989211416

U2 - 10.1016/j.jssc.2016.09.022

DO - 10.1016/j.jssc.2016.09.022

M3 - Article

AN - SCOPUS:84989211416

SN - 0022-4596

VL - 244

SP - 140

EP - 150

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

ER -

HT-solution growth and characterisation of In_xNa_xMn_1-2xWO₄ (0<x≤0.26)

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Keywords

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