Structural and magnetic properties of churchite-type REPO4·2H2O materials

Mohamed Ruwaid Rafiuddin; Shu Guo; Giovanni Donato; Andrew P. Grosvenor; Nicolas Dacheux; Robert J. Cava; Adel Mesbah

doi:10.1016/j.jssc.2022.123261

Structural and magnetic properties of churchite-type REPO₄·2H₂O materials

Mohamed Ruwaid Rafiuddin, Shu Guo, Giovanni Donato, Andrew P. Grosvenor, Nicolas Dacheux, Robert J. Cava, Adel Mesbah

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

2 Scopus citations

Abstract

The structural and magnetic properties of churchite-type REPO₄·2H₂O (RE = Gd to Lu) materials (low-temperature polymorph of the rare-earth phosphate family) are reported. The materials were synthesized at low temperatures (4 °C) using a precipitation method and the long-range and local structures were determined using powder XRD and XANES. The churchite materials crystallize in the monoclinic system (Space group – C2/c) and adopt a 2D layered structure with water occupying the interlayer regions. The churchite materials were found to transform to the xenotime structure at 300 °C. DC magnetization experiments reveal the absence of long-range magnetic ordering between 300 and 1.8 K. The effective magnetic moments (μ_eff) are similar to those of the free RE (RE = Gd, Tb, Dy, Ho, Er) ions.

Original language	English (US)
Article number	123261
Journal	Journal of Solid State Chemistry
Volume	312
DOIs	https://doi.org/10.1016/j.jssc.2022.123261
State	Published - Aug 2022

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

Keywords

Churchite
Local structure
Magnetism
Paramagnetic nature
XANES

Access to Document

10.1016/j.jssc.2022.123261

Cite this

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title = "Structural and magnetic properties of churchite-type REPO4·2H2O materials",

abstract = "The structural and magnetic properties of churchite-type REPO4·2H2O (RE = Gd to Lu) materials (low-temperature polymorph of the rare-earth phosphate family) are reported. The materials were synthesized at low temperatures (4 °C) using a precipitation method and the long-range and local structures were determined using powder XRD and XANES. The churchite materials crystallize in the monoclinic system (Space group – C2/c) and adopt a 2D layered structure with water occupying the interlayer regions. The churchite materials were found to transform to the xenotime structure at 300 °C. DC magnetization experiments reveal the absence of long-range magnetic ordering between 300 and 1.8 K. The effective magnetic moments (μeff) are similar to those of the free RE (RE = Gd, Tb, Dy, Ho, Er) ions.",

keywords = "Churchite, Local structure, Magnetism, Paramagnetic nature, XANES",

author = "Rafiuddin, {Mohamed Ruwaid} and Shu Guo and Giovanni Donato and Grosvenor, {Andrew P.} and Nicolas Dacheux and Cava, {Robert J.} and Adel Mesbah",

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doi = "10.1016/j.jssc.2022.123261",

language = "English (US)",

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AU - Rafiuddin, Mohamed Ruwaid

AU - Guo, Shu

AU - Donato, Giovanni

AU - Grosvenor, Andrew P.

AU - Dacheux, Nicolas

AU - Cava, Robert J.

AU - Mesbah, Adel

PY - 2022/8

Y1 - 2022/8

N2 - The structural and magnetic properties of churchite-type REPO4·2H2O (RE = Gd to Lu) materials (low-temperature polymorph of the rare-earth phosphate family) are reported. The materials were synthesized at low temperatures (4 °C) using a precipitation method and the long-range and local structures were determined using powder XRD and XANES. The churchite materials crystallize in the monoclinic system (Space group – C2/c) and adopt a 2D layered structure with water occupying the interlayer regions. The churchite materials were found to transform to the xenotime structure at 300 °C. DC magnetization experiments reveal the absence of long-range magnetic ordering between 300 and 1.8 K. The effective magnetic moments (μeff) are similar to those of the free RE (RE = Gd, Tb, Dy, Ho, Er) ions.

AB - The structural and magnetic properties of churchite-type REPO4·2H2O (RE = Gd to Lu) materials (low-temperature polymorph of the rare-earth phosphate family) are reported. The materials were synthesized at low temperatures (4 °C) using a precipitation method and the long-range and local structures were determined using powder XRD and XANES. The churchite materials crystallize in the monoclinic system (Space group – C2/c) and adopt a 2D layered structure with water occupying the interlayer regions. The churchite materials were found to transform to the xenotime structure at 300 °C. DC magnetization experiments reveal the absence of long-range magnetic ordering between 300 and 1.8 K. The effective magnetic moments (μeff) are similar to those of the free RE (RE = Gd, Tb, Dy, Ho, Er) ions.

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KW - Local structure

KW - Magnetism

KW - Paramagnetic nature

KW - XANES

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