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Pato-Doldán B, Cañadillas-Delgado L, Gómez-Aguirre LC, Señarís-Rodríguez MA, Sánchez-Andújar M, Fabelo Ó, Mira J. Atypical Magnetic Behavior in the Incommensurate (CH 3NH 3)[Ni(HCOO) 3] Hybrid Perovskite. J Phys Chem C Nanomater Interfaces 2023; 127:3330-3338. [PMID: 36846095 PMCID: PMC9942519 DOI: 10.1021/acs.jpcc.2c08364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/10/2023] [Indexed: 06/18/2023]
Abstract
A plethora of temperature-induced phase transitions have been observed in (CH3NH3)[M(HCOO)3] compounds, where M is Co(II) or Ni(II). Among them, the nickel compound exhibits a combination of magnetic and nuclear incommensurability below Néel temperature. Despite the fact that the zero-field behavior has been previously addressed, here we study in depth the macroscopic magnetic behavior of this compound to unveil the origin of the atypical magnetic response found in it and in its parent family of formate perovskites. In particular, they show a puzzling magnetization reversal in the curves measured starting from low temperatures, after cooling under zero field. The first atypical phenomenon is the impossibility of reaching zero magnetization, even by nullifying the applied external field and even compensating it for the influence of the Earth's magnetic field. Relatively large magnetic fields are needed to switch the magnetization from negative to positive values or vice versa, which is compatible with a soft ferromagnetic system. The atypical path found in its first magnetization curve and hysteresis loop at low temperatures is the most noticeable feature. The magnetization curve switches from more than 1200 Oe from the first magnetization loop to the subsequent magnetization loops. A feature that cannot be explained using a model based on unbalanced pair of domains. As a result, we decipher this behavior in light of the incommensurate structure of this material. We propose, in particular, that the applied magnetic field induces a magnetic phase transition from a magnetically incommensurate structure to a magnetically modulated collinear structure.
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Affiliation(s)
- Breogán Pato-Doldán
- Department
of Chemistry, Faculty of Sciences, Universidade
da Coruña, 15071 A Coruña, Spain
| | | | | | | | - Manuel Sánchez-Andújar
- Department
of Chemistry, Faculty of Sciences, Universidade
da Coruña, 15071 A Coruña, Spain
| | - Óscar Fabelo
- Institut
Laue-Langevin, 6 Rue Jules Horowitz, BP 156, 38042 Grenoble, Cedex 9, France
- Departamento
de Física, Universidad de La Laguna, Avenida Astrofísico Francisco
Sánchez s/n, 38200 La Laguna, Tenerife, Spain
| | - Jorge Mira
- Departamento
de Física Aplicada and iMATUS, Universidade
de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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2
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García-Fernández A, Bermúdez-García JM, Castro-García S, Llamas-Saiz AL, Artiaga R, López-Beceiro J, Hu S, Ren W, Stroppa A, Sánchez-Andújar M, Señarís-Rodríguez MA. Phase Transition, Dielectric Properties, and Ionic Transport in the [(CH 3) 2NH 2]PbI 3 Organic-Inorganic Hybrid with 2H-Hexagonal Perovskite Structure. Inorg Chem 2017; 56:4918-4927. [PMID: 28375611 DOI: 10.1021/acs.inorgchem.6b03095] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this work, we focus on [(CH3)2NH2]PbI3, a member of the [AmineH]PbI3 series of hybrid organic-inorganic compounds, reporting a very easy mechanosynthesis route for its preparation at room temperature. We report that this [(CH3)2NH2]PbI3 compound with 2H-perovskite structure experiences a first-order transition at ≈250 K from hexagonal symmetry P63/mmc (HT phase) to monoclinic symmetry P21/c (LT phase), which involves two cooperative processes: an off-center shift of the Pb2+ cations and an order-disorder process of the N atoms of the DMA cations. Very interestingly, this compound shows a dielectric anomaly associated with the structural phase transition. Additionally, this compound displays very large values of the dielectric constant at room temperature because of the appearance of a certain conductivity and the activation of extrinsic contributions, as demonstrated by impedance spectroscopy. The large optical band gap displayed by this material (Eg = 2.59 eV) rules out the possibility that the observed conductivity can be electronic and points to ionic conductivity, as confirmed by density functional theory calculations that indicate that the lowest activation energy of 0.68 eV corresponds to the iodine anions, and suggests the most favorable diffusion paths for these anions. The obtained results thus indicate that [(CH3)2NH2]PbI3 is an electronic insulator and an ionic conductor, where the electronic conductivity is disfavored because of the low dimensionality of the [(CH3)2NH2]PbI3 structure.
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Affiliation(s)
- A García-Fernández
- QuiMolMat Group, Department of Fundamental Chemistry, Faculty of Science and CICA, University of A Coruña , Campus A Coruña, 15071 A Coruña, Spain
| | - J M Bermúdez-García
- QuiMolMat Group, Department of Fundamental Chemistry, Faculty of Science and CICA, University of A Coruña , Campus A Coruña, 15071 A Coruña, Spain
| | - S Castro-García
- QuiMolMat Group, Department of Fundamental Chemistry, Faculty of Science and CICA, University of A Coruña , Campus A Coruña, 15071 A Coruña, Spain
| | - A L Llamas-Saiz
- RIAIDT X-ray Unit, University of Santiago de Compostela , 15782 Santiago de Compostela, Spain
| | - R Artiaga
- Department of Industrial Engineering II, University of A Coruña , Campus Ferrol, 15403 Ferrol, Spain
| | - J López-Beceiro
- Department of Industrial Engineering II, University of A Coruña , Campus Ferrol, 15403 Ferrol, Spain
| | - S Hu
- International Centre for Quantum and Molecular Structures, Physics Department, Shanghai University , Shanghai 200444, China.,Materials Genome Institute and Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University , Shanghai 200444, China
| | - W Ren
- International Centre for Quantum and Molecular Structures, Physics Department, Shanghai University , Shanghai 200444, China.,Materials Genome Institute and Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University , Shanghai 200444, China
| | - A Stroppa
- International Centre for Quantum and Molecular Structures, Physics Department, Shanghai University , Shanghai 200444, China.,Consiglio Nazionale delle Ricerche , Institute CNR-SPIN , Via Vetoio, 67100 L'Aquila, Italy
| | - M Sánchez-Andújar
- QuiMolMat Group, Department of Fundamental Chemistry, Faculty of Science and CICA, University of A Coruña , Campus A Coruña, 15071 A Coruña, Spain
| | - M A Señarís-Rodríguez
- QuiMolMat Group, Department of Fundamental Chemistry, Faculty of Science and CICA, University of A Coruña , Campus A Coruña, 15071 A Coruña, Spain
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Bermúdez-García JM, Vicent-Luna JM, Yáñez-Vilar S, Hamad S, Sánchez-Andújar M, Castro-García S, Calero S, Señarís-Rodríguez MA. Liquid self-diffusion of H2O and DMF molecules in Co-MOF-74: molecular dynamics simulations and dielectric spectroscopy studies. Phys Chem Chem Phys 2016; 18:19605-12. [DOI: 10.1039/c6cp02477g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Dielectric spectroscopy, supported by molecular dynamics simulations, is found to be a fast and non-destructive technique to study molecular transport within porous MOFs and related materials.
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Affiliation(s)
- J. M. Bermúdez-García
- QuiMolMat Group
- Department of Fundamental Chemistry
- Faculty of Science and CICA
- University of A Coruña
- 15071 A Coruña
| | - J. M. Vicent-Luna
- Department of Physical, Chemical, and Natural Systems
- Universidad Pablo de Olavide
- ES-41013 Seville
- Spain
| | - S. Yáñez-Vilar
- QuiMolMat Group
- Department of Fundamental Chemistry
- Faculty of Science and CICA
- University of A Coruña
- 15071 A Coruña
| | - S. Hamad
- Department of Physical, Chemical, and Natural Systems
- Universidad Pablo de Olavide
- ES-41013 Seville
- Spain
| | - M. Sánchez-Andújar
- QuiMolMat Group
- Department of Fundamental Chemistry
- Faculty of Science and CICA
- University of A Coruña
- 15071 A Coruña
| | - S. Castro-García
- QuiMolMat Group
- Department of Fundamental Chemistry
- Faculty of Science and CICA
- University of A Coruña
- 15071 A Coruña
| | - S. Calero
- Department of Physical, Chemical, and Natural Systems
- Universidad Pablo de Olavide
- ES-41013 Seville
- Spain
| | - M. A. Señarís-Rodríguez
- QuiMolMat Group
- Department of Fundamental Chemistry
- Faculty of Science and CICA
- University of A Coruña
- 15071 A Coruña
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Gómez-Aguirre LC, Pato-Doldán B, Stroppa A, Yáñez-Vilar S, Bayarjargal L, Winkler B, Castro-García S, Mira J, Sánchez-Andújar M, Señarís-Rodríguez MA. Room-Temperature Polar Order in [NH4][Cd(HCOO)3] - A Hybrid Inorganic–Organic Compound with a Unique Perovskite Architecture. Inorg Chem 2015; 54:2109-16. [DOI: 10.1021/ic502218n] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- L. C. Gómez-Aguirre
- Department of Fundamental
Chemistry, University of A Coruña, 15071, A Coruña, Spain
| | - B. Pato-Doldán
- Department of Fundamental
Chemistry, University of A Coruña, 15071, A Coruña, Spain
| | | | - S. Yáñez-Vilar
- Department of Applied Physics, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - L. Bayarjargal
- Institute for Geoscience, University of Frankfurt, D-60438 Frankfurt a.M., Germany
| | - B. Winkler
- Institute for Geoscience, University of Frankfurt, D-60438 Frankfurt a.M., Germany
| | - S. Castro-García
- Department of Fundamental
Chemistry, University of A Coruña, 15071, A Coruña, Spain
| | - J. Mira
- Department of Applied Physics, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - M. Sánchez-Andújar
- Department of Fundamental
Chemistry, University of A Coruña, 15071, A Coruña, Spain
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Bermúdez-García JM, Yáñez-Vilar S, Castro-García S, Señarís-Rodríguez MA, Sánchez-Andújar M. New properties in old systems: cooperative electric order in ferrocene and ammonia-borane. RSC Adv 2015. [DOI: 10.1039/c5ra12506e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
After half a century of studies on ferrocene and ammonia-borane, it is very exciting to observe that these materials still hide interesting properties not described before. Here we report dielectric transitions associated with the phase transition.
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Affiliation(s)
- J. M. Bermúdez-García
- QuiMolMat Group
- Department of Fundamental Chemistry
- Faculty of Science and CICA
- University of A Coruña
- Campus A Coruña
| | - S. Yáñez-Vilar
- QuiMolMat Group
- Department of Fundamental Chemistry
- Faculty of Science and CICA
- University of A Coruña
- Campus A Coruña
| | - S. Castro-García
- QuiMolMat Group
- Department of Fundamental Chemistry
- Faculty of Science and CICA
- University of A Coruña
- Campus A Coruña
| | - M. A. Señarís-Rodríguez
- QuiMolMat Group
- Department of Fundamental Chemistry
- Faculty of Science and CICA
- University of A Coruña
- Campus A Coruña
| | - M. Sánchez-Andújar
- QuiMolMat Group
- Department of Fundamental Chemistry
- Faculty of Science and CICA
- University of A Coruña
- Campus A Coruña
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Sánchez-Andújar M, Gómez-Aguirre LC, Pato Doldán B, Yáñez-Vilar S, Artiaga R, Llamas-Saiz AL, Manna RS, Schnelle F, Lang M, Ritter F, Haghighirad AA, Señarís-Rodríguez MA. First-order structural transition in the multiferroic perovskite-like formate [(CH3)2NH2][Mn(HCOO)3]. CrystEngComm 2014. [DOI: 10.1039/c3ce42411a] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Pato-Doldán B, Gómez-Aguirre LC, Bermúdez-García JM, Sánchez-Andújar M, Fondado A, Mira J, Castro-García S, Señarís-Rodríguez MA. Coexistence of magnetic and electrical order in the new perovskite-like (C3N2H5)[Mn(HCOO)3] formate. RSC Adv 2013. [DOI: 10.1039/c3ra43165g] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Pato-Doldán B, Sánchez-Andújar M, Gómez-Aguirre LC, Yáñez-Vilar S, López-Beceiro J, Gracia-Fernández C, Haghighirad AA, Ritter F, Castro-García S, Señarís-Rodríguez MA. Near room temperature dielectric transition in the perovskite formate framework [(CH3)2NH2][Mg(HCOO)3]. Phys Chem Chem Phys 2012; 14:8498-501. [DOI: 10.1039/c2cp40564d] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sánchez-Andújar M, Presedo S, Yáñez-Vilar S, Castro-García S, Shamir J, Señarís-Rodríguez MA. Correction to Characterization of the Order–Disorder Dielectric Transition in the Hybrid Organic–Inorganic Perovskite-like Formate Mn(HCOO) 3[(CH 3) 2NH 2]. Inorg Chem 2011. [DOI: 10.1021/ic201638t] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Doldán BP, Sánchez-Andújar M, Castro-García S, Señarís-Rodríguez MA. Structural analysis of metal organic frameworks with perovskite-like structure. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311090313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Sánchez-Andújar M, Presedo S, Yáñez-Vilar S, Castro-García S, Shamir J, Señarís-Rodríguez MA. Characterization of the order-disorder dielectric transition in the hybrid organic-inorganic perovskite-like formate Mn(HCOO)(3)[(CH(3))(2)NH(2)]. Inorg Chem 2010; 49:1510-6. [PMID: 20095567 DOI: 10.1021/ic901872g] [Citation(s) in RCA: 193] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have found that the hybrid organic-inorganic perovskite-like formate Mn(HCOO)(3)[(CH(3))(2)NH(2)] shows a dielectric transition around 190 K. According to single crystal X-ray diffraction, the compound shows rhombohedral symmetry at room temperature and monoclinic symmetry at low temperature (100 K), and the main difference between both structures is that the (CH(3))(2)NH(2)(+) (DMA) cations are disordered in the high temperature phase but cooperatively ordered in the low temperature one. The vibrational spectra of this compound reveal that significant changes take place in the vibrations ascribed to the DMA cation (changes in the frequency of certain vibrations, splitting of particular vibrations, and changes in the intensities), while no significant changes have been observed in those attributed to the formate anion. On the basis of all this information, we attribute the origin of the dielectric transition to the dynamics of the DMA cations: above 190 K these cations can rotate inside the cubooctahedral cavity created by the [Mn(HCOO)(3)](-) framework, while for lower temperatures such rotation gets frozen, and their cooperative arrangement inside the cavities give rise to the observed dielectric transition.
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Sánchez-Andújar M, Señarís-Rodríguez MA. Cation Ordering and Electrical Properties of the Ruddlesden-Popper Gd2−2xSr1+2xCo2O7 Compounds (x = 0 and 0.10). Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200700260] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yáñez-Vilar S, Castro-Couceiro A, Rivas-Murias B, Fondado A, Mira J, Rivas J, Señarís-Rodríguez MA. Study of the Dielectric Properties of the Perovskite LaMn0.5Co0.5O3-δ. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200570055] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Vilar SY, Castro-Couceiro A, Rivas-Murias B, Fondado A, Mira J, Rivas J, Señarís-Rodríguez MA. High Dielectric Constant in the Charge-ordered Manganese Oxide CaMn7O12. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200570040] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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