Magnetic, resonance, and optical properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Cu</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mi>Sm</mml:mi><mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:msub><mml:mi>SeO</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mo>)</mml:mo></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi>Cl</mml:mi></mml:mrow></mml:math>: A rare-earth francisite compound

Zakharov, Konstantin V.; Zvereva, E.A.; Markina, M.M.; Stratan, M. I.; Кузнецова, Е. С.; Дунаев, С. Ф.; Berdonosov, P. S.; Долгих, В. А.; Olenev, Andrei V.; Климин, С. А.; Mazaev, L. S.; Kashchenko, M. A.; Ahmed, Md. A.; Banerjee, Aritra; Bandyopadhyay, S.; Iqbal, Asif; Rahaman, Badiur; Saha‐Dasgupta, Tanusri; Vasiliev, A. N.

doi:10.1103/physrevb.94.054401

Cited by 39 publications

(25 citation statements)

References 27 publications

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“…Later, its synthetic analogs for Cl, Br, and I were prepared in laboratory conditions [31]. It was shown that rare Earth metals may form compounds with francisite-like structures [32][33][34][35][36]. The crystal structure of francisite contains two copper ions positions with square planar oxygen atom coordination.…”

Section: Francisite Like Compounds Cu 3 M(seo 3 ) 2 O 2 Xmentioning

confidence: 99%

“…It manifests itself in the appearance of the second sharp maximum on the magnetic susceptibility curve at T < T N , as well as on the heat capacity temperature dependence curve ( Figure 18). Up to now a detailed study has been undertaken for only two representatives, which are Cu 3 Sm(SeO 3 ) 2 O 2 Cl [34] and Cu 3 Yb(SeO 3 ) 2 O 2 Cl [37]. In both compounds, the magnetic system undergoes the spin-reorientation transition influenced by the rare earth ion's magnetic moment.…”

Section: Francisite Like Compounds Cu 3 M(seo 3 ) 2 O 2 Xmentioning

confidence: 99%

“…(b) The temperature dependences of specific heat in selected magnetic fields for Cu 3 Sm(SeO 3 ) 2 O 2 Cl. Inset: Temperature dependence of magnetic entropy S mag Reprinted figures with permission from[34]. Copyright (2016) by the American Physical Society.…”

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Transition Metal Selenite Halides: A Fascinating Family of Magnetic Compounds

2018

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The problem of searching for low-dimensional magnetic systems has been a topical subject and has attracted attention of the chemistry and physics community for the last decade. In low-dimensional magnetic systems, magnetic ions are distributed anisotopically and form different groups such as dimers, chains, ladders, or planes. In 3D frameworks, the distances between magnetic ions are equal in all directions while in low-dimensional systems the distances within groups are different from those between groups. The main approach of searching for desired systems is a priori crystal chemical design expecting the needed distribution of transition metal ions in the resulting structure. One of the main concepts of this structural design is the incorporation of the p-element ions with stereochemically active electron pairs and ions acting as spacers in the composition. Transition metal selenite halides, substances that combine SeO 3 2− groups and halide ions in the structure, seem to be a promising object of investigation. Up to now, there are 33 compounds that are structurally described, magnetically characterized, and empirically tested on different levels. The presented review will summarize structural peculiarities and observed magnetic properties of the known transition metal selenite halides. In addition, the known compounds will be analyzed as possible low-dimensional magnetic systems.

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Section: Francisite Like Compounds Cu 3 M(seo 3 ) 2 O 2 Xmentioning

confidence: 99%

Section: Francisite Like Compounds Cu 3 M(seo 3 ) 2 O 2 Xmentioning

confidence: 99%

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Transition Metal Selenite Halides: A Fascinating Family of Magnetic Compounds

2018

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“…The family of compounds Cu3R(SeO3)2O2Cl (R = RE) can be considered as a model system of 2D copper layers with different types of interactions, due to introduction of a second (RE) magnetic subsystem. In the case of R = Y [5] or Sm [6], the Néel temperature is also low (TN = 35 K), but higher as compared to parent francisite, which is due to a discrepancy in ionic radii of bismuth and RE ions. In addition to AFM ordering, Cu3Sm(SeO3)2O2Cl, experiences a spin-reorientation second-order phase transition at TR = 9K [6].…”

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confidence: 96%

“…In the case of R = Y [5] or Sm [6], the Néel temperature is also low (TN = 35 K), but higher as compared to parent francisite, which is due to a discrepancy in ionic radii of bismuth and RE ions. In addition to AFM ordering, Cu3Sm(SeO3)2O2Cl, experiences a spin-reorientation second-order phase transition at TR = 9K [6]. In this work, a comparative study of compounds with R = Sm, Yb, Er, Nd, Pr, and Eu is presented.…”

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confidence: 99%

Magnetic phase transitions in two-dimensional frustrated Cu₃R(SeO₃)₂O₂Cl. Spectroscopic study

Климин

Budkin

2016

EPJ Web Conf.

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Abstract. Using optical study of electronic spectra of rare-earth (RE) ions, magnetic phase transitions in the low-dimensional frustrated RE magnets Cu3R(SeO3)2O2Cl (R = Sm, Yb, Er, Nd, Pr, Eu) were investigated. Phase transitions were registered either by splittings of crystal-field (CF) doublets or by repulsion of CF levels of f-ions in a staggered magnetic field. Different scenarios of magnetic order in isostructural compounds of the francisite family are discussed.Magnetic system of a natural mineral francisite Cu3Bi(SeO3)2O2Cl [1] has attracted attention of scientists due to its unusual geometry. Copper ions in the orthorhombic Pmmn crystal structure of francisite form a network of two-dimensional (2D) layers with a buckled Kagome lattice [2]. Due to weak interlayer interactions, an antiferromagnetic (AFM) ordering occurs in francisite at TN = 24 K [2]. Bismuth can be replaced by a rare-earth (RE) element, while the crystallographic structure remains the same [4]. The family of compounds Cu3R(SeO3)2O2Cl (R = RE) can be considered as a model system of 2D copper layers with different types of interactions, due to introduction of a second (RE) magnetic subsystem. In the case of R = Y [5] or Sm [6], the Néel temperature is also low (TN = 35 K), but higher as compared to parent francisite, which is due to a discrepancy in ionic radii of bismuth and RE ions. In addition to AFM ordering, Cu3Sm(SeO3)2O2Cl, experiences a spin-reorientation second-order phase transition at TR = 9K [6]. In this work, a comparative study of compounds with R = Sm, Yb, Er, Nd, Pr, and Eu is presented. We have carried out infrared spectroscopy study of f-f transitions in RE ions, with the aim to investigate magnetic ordering in compounds with different RE ions.Transmittance spectra in a wide spectral range (1800 -12000 cm -1 ) were measured using a Fourier-spectrometer Bruker IFS125HR. Mixtures of Cu3R(SeO3)2O2Cl and KBr powders were pressed into tablets, with an effective thickness of the substance ~ 10 mkm. Low temperatures were achieved using a closed-cycle cryostat Cryomech PT403.The CF energies of six R 3+ ions were found in the spectral range studied. Spectroscopic data on temperature-dependent low-energy states of RE ions were used to calculate the RE contribution [7,8] into magnetic susceptibility and heat capacity. Magnetic ordering was detected either by splitting of Kramers ( Sm N

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Magnetic Ordering and Interplay between the Magnetic and Charge Subsystems in New Francisite‐Analog Cu₃Dy(SeO₃)₂O₂Cl as Studied by the Spectroscopy of Kramers Doublets

Климин

Berdonosov

Кузнецова

2023

Physica Rapid Research Ltrs

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The rare‐earth (RE) counterparts of francisite mineral Cu3Bi(SeO3)2O2Cl demonstrate strong interplay between d‐ and f‐magnetic subsystems and interesting magnetic properties, including multiferroicity. Herein, an optical spectroscopic study of a new member of the RE‐francisite family, dysprosium francisite, Cu3Dy(SeO3)2O2Cl, is presented. The inherent property of the Kramers degeneracy to be lifted by a magnetic field is used to study the magnetic and thermodynamic properties of the crystal. The splitting of the spectral lines corresponding to f–f transitions in the Dy3+ Kramers ion unambiguously points to the magnetic ordering of the crystal at a temperature of TN = 39 K. The value of the single‐ion anisotropy of the Dy3+ ion is estimated; it dominates the magnetic anisotropy of the copper subsystem. The specific behavior of the spectral lines in the vicinity of TN clearly indicates low‐dimensional magnetism and the interaction between the magnetic and charge degrees of freedom in Cu3Dy(SeO3)2O2Cl, i.e., the multiferroicity, previously reported in the literature for Cu3Bi(SeO3)2O2Cl.

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Magnetic, resonance, and optical properties ofCu3Sm(SeO3)2O2Cl: A rare-earth francisite compound

Cited by 39 publications

References 27 publications

Transition Metal Selenite Halides: A Fascinating Family of Magnetic Compounds

Transition Metal Selenite Halides: A Fascinating Family of Magnetic Compounds

Magnetic phase transitions in two-dimensional frustrated Cu₃R(SeO₃)₂O₂Cl. Spectroscopic study

Magnetic Ordering and Interplay between the Magnetic and Charge Subsystems in New Francisite‐Analog Cu₃Dy(SeO₃)₂O₂Cl as Studied by the Spectroscopy of Kramers Doublets

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Magnetic, resonance, and optical properties ofCu3Sm(SeO3)2O2Cl: A rare-earth francisite compound

Cited by 39 publications

References 27 publications

Transition Metal Selenite Halides: A Fascinating Family of Magnetic Compounds

Transition Metal Selenite Halides: A Fascinating Family of Magnetic Compounds

Magnetic phase transitions in two-dimensional frustrated Cu3R(SeO3)2O2Cl. Spectroscopic study

Magnetic Ordering and Interplay between the Magnetic and Charge Subsystems in New Francisite‐Analog Cu3Dy(SeO3)2O2Cl as Studied by the Spectroscopy of Kramers Doublets

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Product

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Magnetic phase transitions in two-dimensional frustrated Cu₃R(SeO₃)₂O₂Cl. Spectroscopic study

Magnetic Ordering and Interplay between the Magnetic and Charge Subsystems in New Francisite‐Analog Cu₃Dy(SeO₃)₂O₂Cl as Studied by the Spectroscopy of Kramers Doublets