A new pseudo-polymorph in mineral sphenicidite family (NH 4)[Fe2(OH)(H2O)(PO4) 2]·1.5H2O exhibiting spontaneous magnetization below 25 K

Hong Zhou; Hai Bao Duan; Hui Zhang; Xiao Ming Ren

doi:10.1016/j.solidstatesciences.2010.08.002

A new pseudo-polymorph in mineral sphenicidite family (NH ₄)[Fe₂(OH)(H₂O)(PO₄) ₂]·1.5H₂O exhibiting spontaneous magnetization below 25 K

Hong Zhou, Hai Bao Duan, Hui Zhang, Xiao Ming Ren

School of Chemistry and Moleculai Engineering

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

7 Scopus citations

Abstract

The hydrothermal synthesis and structure for a new iron phosphate based open-framework solid, (NH₄)[Fe₂(OH)(H₂O) (PO₄)₂]·1.5H₂O, is presented. The three-dimensional (3-D) framework is built from butterfly-shaped tetranuclear iron-oxygen clusters, which are coordinated by eight PO₄ tetrahedra to create 8-membered windows along the a-, b- and c-axes; the lattice water molecules as well as the counter NH₄⁺ cations reside in the cross channels. The new open-framework solid is a pseudo-polymorph with the known structure of the mineral sphenicidite, and exhibits spontaneous magnetization in the low temperature regime with T_N ≈ 25 K, which is a result of canted spin antiferromagnetism.

Original language	English
Pages (from-to)	1816-1821
Number of pages	6
Journal	Solid State Sciences
Volume	12
Issue number	10
DOIs	https://doi.org/10.1016/j.solidstatesciences.2010.08.002
State	Published - Oct 2010

Keywords

Iron phosphate
Open-framework material
Spin canting
Spontaneous magnetization

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10.1016/j.solidstatesciences.2010.08.002

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title = "A new pseudo-polymorph in mineral sphenicidite family (NH 4)[Fe2(OH)(H2O)(PO4) 2]·1.5H2O exhibiting spontaneous magnetization below 25 K",

abstract = "The hydrothermal synthesis and structure for a new iron phosphate based open-framework solid, (NH4)[Fe2(OH)(H2O) (PO4)2]·1.5H2O, is presented. The three-dimensional (3-D) framework is built from butterfly-shaped tetranuclear iron-oxygen clusters, which are coordinated by eight PO4 tetrahedra to create 8-membered windows along the a-, b- and c-axes; the lattice water molecules as well as the counter NH4+ cations reside in the cross channels. The new open-framework solid is a pseudo-polymorph with the known structure of the mineral sphenicidite, and exhibits spontaneous magnetization in the low temperature regime with TN ≈ 25 K, which is a result of canted spin antiferromagnetism.",

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author = "Hong Zhou and Duan, {Hai Bao} and Hui Zhang and Ren, {Xiao Ming}",

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AU - Zhou, Hong

AU - Duan, Hai Bao

AU - Zhang, Hui

AU - Ren, Xiao Ming

PY - 2010/10

Y1 - 2010/10

N2 - The hydrothermal synthesis and structure for a new iron phosphate based open-framework solid, (NH4)[Fe2(OH)(H2O) (PO4)2]·1.5H2O, is presented. The three-dimensional (3-D) framework is built from butterfly-shaped tetranuclear iron-oxygen clusters, which are coordinated by eight PO4 tetrahedra to create 8-membered windows along the a-, b- and c-axes; the lattice water molecules as well as the counter NH4+ cations reside in the cross channels. The new open-framework solid is a pseudo-polymorph with the known structure of the mineral sphenicidite, and exhibits spontaneous magnetization in the low temperature regime with TN ≈ 25 K, which is a result of canted spin antiferromagnetism.

AB - The hydrothermal synthesis and structure for a new iron phosphate based open-framework solid, (NH4)[Fe2(OH)(H2O) (PO4)2]·1.5H2O, is presented. The three-dimensional (3-D) framework is built from butterfly-shaped tetranuclear iron-oxygen clusters, which are coordinated by eight PO4 tetrahedra to create 8-membered windows along the a-, b- and c-axes; the lattice water molecules as well as the counter NH4+ cations reside in the cross channels. The new open-framework solid is a pseudo-polymorph with the known structure of the mineral sphenicidite, and exhibits spontaneous magnetization in the low temperature regime with TN ≈ 25 K, which is a result of canted spin antiferromagnetism.

KW - Iron phosphate

KW - Open-framework material

KW - Spin canting

KW - Spontaneous magnetization

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A new pseudo-polymorph in mineral sphenicidite family (NH ₄)[Fe₂(OH)(H₂O)(PO₄) ₂]·1.5H₂O exhibiting spontaneous magnetization below 25 K

Abstract

Keywords

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