Two-sublattice description of the dimer-trimer chain compound 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Li</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Cu</mml:mi><mml:mn>5</mml:mn></mml:msub><mml:msub><mml:mi>Si</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>14</mml:mn></mml:msub></mml:mrow></mml:math>
: High-field magnetization and ESR studies

Jin, Xu; Ouyang, Zhongwen; Liu, X. C.; Xiao, Tongtong; Cao, Jiaojiao; Wang, Zhenxing; Xia, Z. C.; Wei, Tong

doi:10.1103/physrevb.104.174423

Cited by 7 publications

(2 citation statements)

References 29 publications

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“…H onset of AFM states at 2 K. Qualitatively, these two modes can be described by conventional two-sublattice AFM resonance with axial-type anisotropy combined by the evolution of f vs. H and the weak anisotropy in ab plane determined by M(H). By fitting ω 1 and ω 2 through equation [39,40]:…”

Section: High-frequency Electron Spin Resonancementioning

confidence: 99%

High-field magnetization and electronic spin resonance study in the twisted honeycomb lattice α-Mn₂V₂O₇

Chen

et al. 2023

J. Phys.: Condens. Matter

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We report the single-crystal growth of Mn2V2O7 and the results of magnetic susceptibility, high-field magnetization up to 55 T and high-frequency electric spin resonance (ESR) measurements for its low-temperature α phase. Two antiferromagnetic (AFM) ordering at 17.5 K and 3 K and obvious magnetic anisotropy are observed in α-Mn2V2O7 upon cooling. In pulsed high magnetic fields, the compound reaches the saturation magnetic moment of ~10.5 μB/f.u. at around 45 T after two undergoing AFM phase transitions at Hc1 ≈ 16 T, Hc2 ≈ 34.5 T for H//[11 ̅0] and Hsf1 = 2.5 T, Hsf2 = 7 T for H//[001]. In these two directions, two and seven resonance modes are detected by ESR spectroscopy, respectively. The ω1 and ω2 modes of H//[11 ̅0] can be well described by two-sublattice AFM resonance mode with two zero-field gaps at 94.51 GHz and 169.28 GHz, indicating a hard-axis feature. The seven modes for H//[001] are partially separated by the critical fields of Hsf1 and Hsf2, displaying the two signs of spin-flop transition. The fittings of ωc1 and ωc2 modes yield zero-field gaps at 69.50 GHz and 84.73 GHz for H//[001], confirming the axis-type anisotropy. The saturated moment and gyromagnetic ratio indicate the Mn2+ ion in α-Mn2V2O7 is in a high spin state with orbital moment completely quenched. A quasi-one-dimensional magnetism with a zig-zag-chain spin configuration is suggested in α-Mn2V2O7, due to the special neighbor interactions caused by a distorted network structure with honeycomb layer.

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Section: High-frequency Electron Spin Resonancementioning

confidence: 99%

High-field magnetization and electronic spin resonance study in the twisted honeycomb lattice α-Mn₂V₂O₇

Chen

et al. 2023

J. Phys.: Condens. Matter

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“…In the recent past, as a part of a general screening program for good lithium-ion-based solid electrolyte materials, a number of lithium-ion-based silicate compounds have been considered such as Li 2 SiO 3 (∼5.6 × 10 –5 S/m), Li 4 SiO 4 (∼2.2 × 10 –1 S/m), Li 2 Si 2 O 5 (∼4.5 × 10 –7 S/m), Li 2 Si 3 O 7 (∼1.4 × 10 –3 S/m), and LiAlSiO 4 (∼4.7 × 10 –3 S/m) at 673 K . Here, in the present study, our interest is in the sorosilicate compound Li 2 Cu 5 (Si 2 O 7 ) 2 , first reported by Kawamura et al The compound is known for its interesting magnetic properties , due to dimer and trimer units of copper ions. Our present study is motivated by its special crystal structure (space group: P 1̅), where Li ions are located within the channels of the framework type of crystal structure made of copper and silicon polyhedra.…”

Section: Introductionmentioning

confidence: 99%

Li-Ion Conduction Mechanism and Relaxation Dynamics in Sorosilicate Compound Li₂Cu₅(Si₂O₇)₂

Chikara,

Bera,

Kumar

et al. 2023

ACS Appl. Electron. Mater.

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Inorganic solid electrolytes are the building blocks for all-solid-state lithium-ion batteries and have substantial advantages in safety and electrochemical as well as mechanical stability compared to organic liquid electrolytes. We report here the Li-ion conduction mechanism and relaxation dynamics in a potential solid electrolyte material, viz. sorosilicate compound Li 2 Cu 5 (Si 2 O 7 ) 2 , by impedance spectroscopy. The dc conductivity follows the Arrhenius behavior with an activation energy of 1.25(4) eV, and it reveals thermally activated lithium-ion conduction. We have shown the importance of a careful selection of an equivalent circuit model to determine the dc conductivity parameters from the impedance data involving contributions from the grain and grain boundaries. The frequency-and temperaturedependent ac conductivity and dielectric constant measurements reveal that the ionic conduction in the present compound occurs through the correlated barrier hopping (CBH) of charge carriers. The ionic conduction pathways within the unit cell have been mapped by the soft bond valence sum (BVS) analysis of the measured neutron diffraction pattern. The analysis indicates the presence of bottlenecks in the lithium-ion conduction pathways along the a axis and along the diagonal direction of the bc plane of the triclinic unit cell which are responsible for the observed high value of activation energy and, hence, the low value of ionic conductivity. Electric modulus studies have confirmed that the ionic conduction relaxation process is thermally activated and it has a spread of relaxation time. Therefore, the present study involving the dc conductivity, ac conductivity, electric modulus, and dielectric constant analyses sheds light on the microscopic mechanism of ionic conduction in Li 2 Cu 5 (Si 2 O 7 ) 2 . The acquired knowledge on the ionic conduction mechanism will be useful for designing efficient ionic conductors for battery applications.

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Magnetism and ESR of the Seff=12 antiferromagnet BaCo2(SeO3)
Liu
¹
,
Ouyang
²
,
Xiao
³

et al. 2022
Phys. Rev. B
7
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2
0
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Two-sublattice description of the dimer-trimer chain compound Li2Cu5Si4O14 : High-field magnetization and ESR studies

Cited by 7 publications

References 29 publications

High-field magnetization and electronic spin resonance study in the twisted honeycomb lattice α-Mn₂V₂O₇

High-field magnetization and electronic spin resonance study in the twisted honeycomb lattice α-Mn₂V₂O₇

Li-Ion Conduction Mechanism and Relaxation Dynamics in Sorosilicate Compound Li₂Cu₅(Si₂O₇)₂

Magnetism and ESR of the Seff=12 antiferromagnet BaCo2(SeO3)
Liu
¹
,
Ouyang
²
,
Xiao
³

et al. 2022
Phys. Rev. B
7
0
2
0
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Two-sublattice description of the dimer-trimer chain compound Li2Cu5Si4O14 : High-field magnetization and ESR studies

Cited by 7 publications

References 29 publications

High-field magnetization and electronic spin resonance study in the twisted honeycomb lattice α-Mn2V2O7

High-field magnetization and electronic spin resonance study in the twisted honeycomb lattice α-Mn2V2O7

Li-Ion Conduction Mechanism and Relaxation Dynamics in Sorosilicate Compound Li2Cu5(Si2O7)2

Magnetism and ESR of the Seff=12 antiferromagnet BaCo2(SeO3)Liu1, Ouyang2, Xiao3 et al. 2022Phys. Rev. B7020View full textAdd to dashboardCite

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High-field magnetization and electronic spin resonance study in the twisted honeycomb lattice α-Mn₂V₂O₇

High-field magnetization and electronic spin resonance study in the twisted honeycomb lattice α-Mn₂V₂O₇

Li-Ion Conduction Mechanism and Relaxation Dynamics in Sorosilicate Compound Li₂Cu₅(Si₂O₇)₂

Magnetism and ESR of the Seff=12 antiferromagnet BaCo2(SeO3)
Liu
¹
,
Ouyang
²
,
Xiao
³

et al. 2022
Phys. Rev. B
7
0
2
0
View full text Add to dashboard Cite