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Dioguardi, A. P.; Selter, S.; Peeck, U.; Aswartham, Saicharan; Sturza, Mihai; Murugesan, R.; Eldeeb, Mohamed S.; Hozoi, Liviu; Büchner, B.; Grafe, H.-J.

doi:10.1103/physrevb.102.064429

Cited by 21 publications

(24 citation statements)

References 70 publications

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“…Figure 7a-d shows the magnetization measurements as a function of temperature for the entire series of (Mn 1−x Ni x ) 2 P 2 S 6 single crystals with a magnetic field of µ 0 H = 1 T applied parallel and perpendicular to the ab plane. The overall behavior of M/H is very similar for all compositions with two prominent features in the magnetization curve, i.e., a broad maximum at elevated temperatures, T max , related to (low-dimensional) magnetic spin correlations in these quasi-two-dimensional van der Waals materials [34][35][36], together with an inflection point at a somewhat lower temperature, T N , signaling the phase transition into a long-range ordered antiferromagnetic state. The Néel temperature T N is defined from the sharp peak in the derivative dχ/dT for H along the crystallographic c axis.…”

Section: Magnetic Propertiesmentioning

confidence: 79%

Section: Magnetic Propertiesmentioning

confidence: 80%

“…They present interesting anisotropic antiferromagnetism below the Néel temperatures of 80 K for Mn 2 P 2 S 6 and 155 K for Ni 2 P 2 S 6 [31,32], which is not well understood. The main difference between these two pristine compounds and the key ingredient in the TM 2 P 2 Ch 6 family is the underlying anisotropy that dictates the long-range magnetic order down to the monolayer, which eventually depends on the 3d transition metal ions [33][34][35][36]. This anisotropy of the system can be tuned systematically by several methods, for example, with chemical substitution or with applied pressure.…”

Section: Introductionmentioning

confidence: 99%

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Tuning Magnetic and Transport Properties in Quasi-2D (Mn1−xNix)2P2S6 Single Crystals

Shemerliuk

Zhou

Yang

et al. 2021

Electronic Materials

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We report an optimized chemical vapor transport method to grow single crystals of (Mn1−xNix)2P2S6 where x = 0, 0.3, 0.5, 0.7, and 1. Single crystals up to 4 mm × 3 mm × 200 μm were obtained by this method. As-grown crystals are characterized by means of scanning electron microscopy and powder X-ray diffraction measurements. The structural characterization shows that all crystals crystallize in monoclinic symmetry with the space group C2/m (No. 12). We have further investigated the magnetic properties of this series of single crystals. The magnetic measurements of the all as-grown single crystals show long-range antiferromagnetic order along all principal crystallographic axes. Overall, the Néel temperature TN is non-monotonous; with increasing Ni2+ doping, the temperature of the antiferromagnetic phase transition first decreases from 80 K for pristine Mn2P2S6 (x = 0) up to x = 0.5 and then increases again to 155 K for pure Ni2P2S6 (x = 1). The magnetic anisotropy switches from out-of-plane to in-plane as a function of composition in (Mn1−xNix)2P2S6 series. Transport studies under hydrostatic pressure on the parent compound Mn2P2S6 evidence an insulator-metal transition at an applied critical pressure of ~22 GPa.

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Section: Magnetic Propertiesmentioning

confidence: 79%

Section: Magnetic Propertiesmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tuning Magnetic and Transport Properties in Quasi-2D (Mn1−xNix)2P2S6 Single Crystals

Shemerliuk

Zhou

Yang

et al. 2021

Electronic Materials

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“…As a next step, the ampule was dwelled with a transport gradient of 750 • C (charge) to 700 • C (sink) for 100 h. After this the charge side was cooled to the sink temperature in 1 h before both sides were furnace-cooled to room temperature. Similar conditions were successfully used to grow crystals of the sister compound AgCrP 2 S 6 [19] and crystals of the ternary M 2 P 2 S 6 compounds [28,29].…”

Section: A Crystal Growth By Chemical Vapor Transportmentioning

confidence: 98%

Crystal Growth, Exfoliation and Magnetic Properties of Quaternary Quasi-Two-Dimensional CuCrP$_2$S$_6$

Selter¹,

Bestha²,

Bhattacharyya³

et al. 2021

Preprint

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We report optimized crystal growth conditions for the quaternary compound CuCrP2S6 by chemical vapor transport. Compositional and structural characterization of the obtained crystals were carried out by means of energy-dispersive X-ray spectroscopy and powder X-ray diffraction. CuCrP2S6 is structurally closely related to the M2P2S6 family (M : transition metal), which contains several compounds that are under investigation as 2D magnets. As-grown crystals exhibit a plate-like, layered morphology as well as a hexagonal habitus. We present successful exfoliation of such asgrown crystals down to thicknesses of 2.8 nm corresponding to 4 layers. CuCrP2S6 crystallizes in the monoclinic space group C2/c. Magnetization measurements reveal an antiferromagnetic ground state with TN ≈ 30 K and a positive Curie-Weiss temperature in agreement with dominant ferromagnetic intralayer coupling. Specific heat measurements confirm this magnetic phase transition and the magnetic order is suppressed in an external magnetic field of about 6 T (8 T) applied parallel (perpendicular) to the ab plane. At higher temperatures between 140-200 K additional broad anomalies associated with structural changes accompanying antiferroelectric ordering are detected in our specific heat studies.

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“…Several recent studies have investigated the transitionmetal-substitution dependence of the bulk magnetic properties of these compounds, revealing excellent tunability of the quasi-2D magnetic behavior in T 2 P 2 S 6 compounds [32][33][34]. This tunability motivates comparison of our recent 31 P nuclear magnetic resonance (NMR) study of Ni 2 P 2 S 6 [35] to Mn 2 P 2 S 6 . Theoretical investigations should be focused on the relationship between the magnetic order and anisotropy in detail to the already experimentally investigated systems, such as (Mn 1−x Ni x ) 2 P 2 S 6 and (Mn 1−x Fe x ) 2 P 2 S 6 [33,36].…”

Section: Introductionmentioning

confidence: 98%

${}^{31}$P NMR investigation of quasi-two-dimensional magnetic correlations in $T_2$P$_2$S$_6$ ($T$ = Mn & Ni)

Bougamha,

Selter,

Shemerliuk

et al. 2021

Preprint

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We report the anomalous breakdown in the scaling of the microscopic magnetic susceptibilityas measured via the 31 P nuclear magnetic resonance (NMR) shift K-with the bulk magnetic susceptibility χ in the paramagnetic state of Mn2P2S6. This anomaly occurs near Tmax ∼ 117 K the maximum in χ(T ) and is therefore associated with the onset of quasi-two-dimensional (quasi-2D) magnetic correlations. The spin-lattice relaxation rate divided by temperature (T1T ) −1 in Mn2P2S6 exhibits broad peak-like behavior as a function of temperature, qualitatively following χ, but displaying no evidence of critical slowing down above the Néel temperature TN . In the magnetic state of Mn2P2S6, NMR spectra provide good evidence for 60 degree rotation of stackingfault-induced magnetic domains, as well as observation of the spin-flop transition that onsets at 4 T. The temperature-dependent critical behavior of the internal hyperfine field at the P site in Mn2P2S6 is consistent with previous measurements and the two-dimensional anisotropic Heisenberg model. In a sample of Ni2P2S6, we observe only two magnetically split resonances in the magnetic state, demonstrating that the multiple-peaked NMR spectra previously associated with 60 degree rotation of stacking faults is sample dependent. Finally, we report the observation of a spin-flop-induced splitting of the NMR spectra in Ni2P2S6, with an onset spin-flop field of H sf = 14 T.

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Quasi-two-dimensional magnetic correlations inNi2P2S6probed byP

Cited by 21 publications

References 70 publications

Tuning Magnetic and Transport Properties in Quasi-2D (Mn1−xNix)2P2S6 Single Crystals

Tuning Magnetic and Transport Properties in Quasi-2D (Mn1−xNix)2P2S6 Single Crystals

Crystal Growth, Exfoliation and Magnetic Properties of Quaternary Quasi-Two-Dimensional CuCrP$_2$S$_6$

${}^{31}$P NMR investigation of quasi-two-dimensional magnetic correlations in $T_2$P$_2$S$_6$ ($T$ = Mn & Ni)

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