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Clulow R, Pramanik P, Stolpe A, Joshi DC, Mathieu R, Henry PF, Sahlberg M. Phase Stability and Magnetic Properties of Compositionally Complex n = 2 Ruddlesden-Popper Perovskites. Inorg Chem 2024; 63:6616-6625. [PMID: 38569100 PMCID: PMC11022176 DOI: 10.1021/acs.inorgchem.3c04277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 03/21/2024] [Accepted: 03/23/2024] [Indexed: 04/05/2024]
Abstract
Four new compositionally complex perovskites with multiple (four or more) cations on the B site of the perovskites have been studied. The materials have the general formula La0.5Sr2.5(M)2O7-δ (M = Ti, Mn, Fe, Co, and Ni) and have been synthesized via conventional solid-state synthesis. The compounds are the first reported examples of compositionally complex n = 2 Ruddlesden-Popper perovskites. The structure and properties of the materials have been determined using powder X-ray diffraction, neutron diffraction, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and magnetometry. The materials are isostructural and adopt the archetypal I4/mmm space group with the following unit cell parameters: a ∼ 3.84 Å, and c ∼ 20.1 Å. The measured compositions from energy dispersive X-ray spectroscopy were La0.51(2)Sr2.57(7)Ti0.41(2)Mn0.41(2)Fe0.39(2)Co0.38(1)Ni0.34(1)O7-δ, La0.59(4)Sr2.29(23)Mn0.58(5)Fe0.56(6)Co0.55(6)Ni0.42(4)O7-δ, La0.54(2)Sr2.49(13)Mn0.41(2)Fe0.81(5)Co0.39(3)Ni0.36(3)O7-δ, and La0.53(4)Sr2.55(19)Mn0.67(6)Fe0.64(5)Co0.31(2)Ni0.30(3)O7-δ. No magnetic contribution is observed in the neutron diffraction data, and magnetometry indicates a spin glass transition at low temperatures.
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Affiliation(s)
- Rebecca Clulow
- Department
of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
| | - Prativa Pramanik
- Department
of Materials Science and Engineering, Uppsala
University, Box 35, 751
03 Uppsala, Sweden
| | - Amanda Stolpe
- Department
of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
- FSCN
Research Centre, Surface and Colloid Engineering, Mid Sweden University, 851 70 Sundsvall, Sweden
| | - Deep C. Joshi
- Department
of Materials Science and Engineering, Uppsala
University, Box 35, 751
03 Uppsala, Sweden
| | - Roland Mathieu
- Department
of Materials Science and Engineering, Uppsala
University, Box 35, 751
03 Uppsala, Sweden
| | - Paul F. Henry
- Department
of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
- ISIS
Pulsed Neutron & Muon Facility, Rutherford
Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, United Kingdom
| | - Martin Sahlberg
- Department
of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
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Pramanik P, Clulow R, Joshi DC, Stolpe A, Berastegui P, Sahlberg M, Mathieu R. Spin glass states in multicomponent layered perovskites. Sci Rep 2024; 14:3382. [PMID: 38336984 PMCID: PMC10858224 DOI: 10.1038/s41598-024-53896-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 02/06/2024] [Indexed: 02/12/2024] Open
Abstract
Temperature-dependent dc-magnetization and ac-susceptibility curves have been recorded for series of single and double layered Ruddlesden-Popper multicomponent perovskites with chemical formula A2BO4 and A3B2O7, respectively, with (La, Sr) on A-sites and up to 7 different cations on the B-sites (Ti, Cr, Mn, Fe, Co, Ni, Cu). The phase purity and chemical homogeneity of the compounds were investigated by X-ray diffraction and energy dispersive X-ray spectroscopy. Independently of the composition, spin glassiness is observed in both systems. Scaling analyses suggest the materials undergo spin glass phase transitions at low temperatures. Yet, qualitative differences are observed between the single-layered and double-layered systems, which are discussed in the light of the spatial dimensionality and magnetic interaction in layered oxide perovskites.
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Affiliation(s)
- P Pramanik
- Department of Materials Science and Engineering, Uppsala University, Box 35, 751 03, Uppsala, Sweden.
| | - R Clulow
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21, Uppsala, Sweden
| | - D C Joshi
- Department of Materials Science and Engineering, Uppsala University, Box 35, 751 03, Uppsala, Sweden
| | - A Stolpe
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21, Uppsala, Sweden
- FSCN Research Centre, Surface and Colloid Engineering, Mid Sweden University, 851 70, Sundsvall, Sweden
| | - P Berastegui
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21, Uppsala, Sweden
| | - M Sahlberg
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 538, 751 21, Uppsala, Sweden
| | - R Mathieu
- Department of Materials Science and Engineering, Uppsala University, Box 35, 751 03, Uppsala, Sweden.
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