Structural, dielectric and magnetic properties of MFeNbO6 materials (M=Ti, Zr, Hf)

Djafri, Elias; Arnold, Donna C.; Arevalo-Lopez, Angel; Fauth, François; Huvé, Marielle; Jooris, Romain; Mentre, Olivier

Document type :

Article dans une revue scientifique: Article original

DOI :

10.1016/j.solidstatesciences.2024.107581

Permalink :

http://hdl.handle.net/20.500.12210/116731

Title :

Structural, dielectric and magnetic properties of MFeNbO6 materials (M=Ti, Zr, Hf)

Author(s) :

Djafri, Elias [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
University of Kent [Canterbury]
Arnold, Donna C. [Auteur]
University of Kent [Canterbury]
Arevalo-Lopez, Angel [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Fauth, François [Auteur]
CELLS ALBA synchroton = ALBA Synchrotron [CELLS ALBA]
Huvé, Marielle [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Jooris, Romain [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Mentre, Olivier [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Journal title :

Solid State Sciences

Abbreviated title :

Solid State Sci.

Volume number :

154

Pages :

107581

Publisher :

Elsevier

Publication date :

2024-05-28

ISSN :

1293-2558

HAL domain(s) :

Chimie/Chimie inorganique

English abstract : [en]

We study the structural, magnetic and electronic properties of MFeNbO6 materials (where A = Ti, Zr or Hf). TiFeNbO6 crystallises with the disordered rutile structure with the P42/mnm space group. Increasing the ionic radii ...
Show more >We study the structural, magnetic and electronic properties of MFeNbO6 materials (where A = Ti, Zr or Hf). TiFeNbO6 crystallises with the disordered rutile structure with the P42/mnm space group. Increasing the ionic radii of the M4+ cation going from Ti4+ (0.605 Å) to Zr4+ (0.72 Å) and Hf4+ (0.710 Å) results in a buckling of the octahedral chains with these materials crystallising with the disordered α-PbO2 structure (space group Pbcn). In contrast, with previous reports for TiFeNbO6 we find no evidence of relaxor ferroelectric behaviour with all three materials instead exhibiting Maxwell-Wagner-like relaxation. Impedance spectroscopy confirms semiconductor behaviour. Magnetically, all three materials can be described by infinite irregular antiferromagnetic S = 5/2 chains with weak ferromagnetism below 10 K. These chains have random directions of propagation between nearest Fe–Fe neighbours consistent with the disordered nature of these materials. We observed a negative imaginary part of the ac susceptibility related to the defect magnetic topology.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Matériaux inorganiques, structures, systèmes et propriétés (MISSP)

Submission date :

2024-09-07T21:00:34Z
2024-09-11T14:40:22Z

Version	Link	Modification date
2	20.500.12210/116731*	2024-09-11T14:32:31Z
1	20.500.12210/116731.1	2024-09-07T21:00:34Z

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