Multiple magnetic phase transitions and critical behavior in single crystal Cr<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e1382" altimg="si78.svg"><mml:msub><mml:mrow /><mml:mrow><mml:mn>5</mml:mn></mml:mrow></mml:msub></mml:math>Te<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e1390" altimg="si79.svg"><mml:msub><mml:mrow /><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:msub></mml:math>

Zhang, Luo-Zhao; Xiao, Qi-Ling; Chen, Fei; Feng, Zhenjie; Cao, Shixun; Zhang, Jincang; Ge, Jun‐Yi

doi:10.1016/j.jmmm.2021.168770

Cited by 9 publications

(5 citation statements)

References 42 publications

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“…To explore the magnetic properties of Cr 4 Te 5 , magnetization as a function of temperature M(T) and field M(H) were measured with the field applied parallel to ab-plane (H ab) and c-axis (H c). The Curie temperature 338 K found in this study is higher than any known composition in the Cr x Te y family in their bulk phase [25,36]. Splitting in the M(T) curves between ZFC and FC data at T C is attributed to the competition between FM and AFM phases at low temperatures [37,38].…”

Section: A Magnetization Measurementsmentioning

confidence: 44%

Magnetocrystalline Anisotropy and Magnetocaloric Effect Studies on the Room-temperature 2D Ferromagnetic Cr$_4$Te$_5$

Purwar¹,

Changdar²,

Ghosh³

et al. 2022

Preprint

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We present a thorough study on the magnetoanisotropic properties and magnetocaloric effect in the layered ferromagnetic Cr 4 Te 5 single crystals by performing the critical behaviour analysis of magnetization isotherms. The critical exponents β =0.485(3), γ=1.202(5), and δ =3.52(3) with a Curie temperature of T C ≈ 340.73(4) K are determined by the modified Arrott plots. We observe a large magnetocrystalline anisotropy K u =330 kJ/m 3 at 3 K which gradually decreases with increasing temperature. Maximum entropy change -∆S max M and the relative cooling power (RCP) are found to be 2.77 J/kg -K and 88.29 J/kg, respectively near T C when the magnetic field applied parallel to ab-plane. Rescaled -∆S M (T, H) data measured at various temperatures and fields collapse into a single universal curve, confirming the second order magnetic transition in this system. Following the renormalization group theory analysis, we find that the spin-coupling is of 3D Heisenberg-type, {d : n} = {3 : 3}, with long-range exchange interactions decaying as J(r) = r -(d+σ ) = r -4.71 .

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Section: A Magnetization Measurementsmentioning

confidence: 44%

Magnetocrystalline Anisotropy and Magnetocaloric Effect Studies on the Room-temperature 2D Ferromagnetic Cr$_4$Te$_5$

Purwar¹,

Changdar²,

Ghosh³

et al. 2022

Preprint

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“…2−7 Among these transition-metal chalcogenides, chromium telluride (Cr x Te y ) binary phases have gained significant attention because of their potential applications in spintronics. Previously, many binary phases of Cr x Te y (such as, CrTe, 8 CrTe 2 , 9,10 Cr 2 Te 3 , 11−14 Cr 3 Te 4 , 15 Cr 5 Te 6 , 16 Cr 0.62 Te, 17 and Cr 5 Te 8 18,19 ) have been studied to explore their structure−property relationships. Some Cr−Te binary phases exhibit near room-temperature ferromagnetic properties in bulk and layered forms.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Some Cr−Te binary phases exhibit near room-temperature ferromagnetic properties in bulk and layered forms. 8,15,16,20 Reportedly, these compounds exhibit ferromagnetic properties, with Curie temperatures (T C ) ranging from 160 to 340 K, depending on their chromium concentration. 21 In these compounds, the c-axis features alternating stacks of chromium-deficient and chromium-rich layers.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The remarkable potential of device applications lies in the tunable correlation between the structure and physical properties of ultrathin layers of transition-metal chalcogenides. − Among these transition-metal chalcogenides, chromium telluride (Cr x Te y ) binary phases have gained significant attention because of their potential applications in spintronics. Previously, many binary phases of Cr x Te y (such as, CrTe, CrTe 2 , , Cr 2 Te 3 , − Cr 3 Te 4 , Cr 5 Te 6 , Cr 0.62 Te, and Cr 5 Te 8 , ) have been studied to explore their structure–property relationships. Some Cr–Te binary phases exhibit near room-temperature ferromagnetic properties in bulk and layered forms. ,,, Reportedly, these compounds exhibit ferromagnetic properties, with Curie temperatures ( T C ) ranging from 160 to 340 K, depending on their chromium concentration .…”

Section: Introductionmentioning

confidence: 99%

“…Previously, many binary phases of Cr x Te y (such as, CrTe, CrTe 2 , , Cr 2 Te 3 , − Cr 3 Te 4 , Cr 5 Te 6 , Cr 0.62 Te, and Cr 5 Te 8 , ) have been studied to explore their structure–property relationships. Some Cr–Te binary phases exhibit near room-temperature ferromagnetic properties in bulk and layered forms. ,,, Reportedly, these compounds exhibit ferromagnetic properties, with Curie temperatures ( T C ) ranging from 160 to 340 K, depending on their chromium concentration . In these compounds, the c -axis features alternating stacks of chromium-deficient and chromium-rich layers.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

High Magnetic Anisotropy and Magnetocaloric Effects in Single-Crystal Cr₂Te₃

Goswami,

Ng,

Abeykoon

et al. 2024

ACS Appl. Electron. Mater.

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We report a systematic investigation of anisotropic magnetocaloric effects in single-crystal Cr 2 Te 3 . Single-crystal samples are synthesized by chemical vapor transport and characterized by X-ray and Laue diffraction methods. The maximum magnetic entropy change −ΔS M max is 4.50 J kg −1 K −1 for the easy c-axis (3.36 J kg −1 K −1 for the hard axis along ab-plane), and the relative cooling power (RCP) is 296.7 J kg −1 for the easy c-axis (183.84 J kg −1 for the hard axis along abplane) for a magnetic field change of 9 T near the Curie temperature. The magnetocrystalline anisotropy constant K u is estimated to be 580.12 kJ m −3 at 140 K, decreasing to 148.60 kJ m −3 at 168 K. Meanwhile, the maximum of the rotational magnetic entropy change −ΔS M R (T, H) between the c-axis and the ab-plane is about 1.14 J kg −1 K −1 for magnetic-field change of 9 T. The critical exponents are estimated by analyzing magnetocaloric effects, which indicate a 2D-Ising type magnetic system. The accuracy of estimated critical exponents is verified by scaling analysis. The maximum magnetic entropy change −ΔS M max ≈ 5.25 J kg −1 K −1 (along the c-axis) and the corresponding adiabatic temperature change ΔT ad ≈ 3.31 K (along the c-axis) are estimated by analyzing heat capacity measurements with a magnetic field up to 9 T.

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Observation of Colossal Topological Hall Effect in Noncoplanar Ferromagnet Cr₅Te₆ Thin Films

Chen

Zhu

Lin

et al. 2023

Adv Funct Materials

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The topological Hall effect (THE) is critical to the exploration of the spin chirality generated by the real‐space Berry curvature, which has attracted worldwide attention for its prospective applications in spintronic devices. However, the prominent THE remains elusive at room temperature, which severely restricts the practical integration of chiral spin textures. Here, a colossal intrinsic THE is showed up to ≈1.6 µΩ cm in large‐area ferromagnet Cr5Te6 thin films epitaxially grown by pulsed laser deposition. Such a THE can be maintained until 270 K, which is attributed to the field‐stimulated noncoplanar spin textures induced by the interaction of the in‐plane ferromagnet and antiferromagnet infrastructures. The first‐principles calculations further verify the considerable Dzyaloshinskii‐Moriya interaction in Cr5Te6. This work not only paves the way for robust chiral spin textures near room temperature in large‐area low‐dimensional ferromagnetic films for practical applications, but also facilitates the development of high‐density and dissipationless spintronic devices.

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Multiple magnetic phase transitions and critical behavior in single crystal Cr5Te6

Cited by 9 publications

References 42 publications

Magnetocrystalline Anisotropy and Magnetocaloric Effect Studies on the Room-temperature 2D Ferromagnetic Cr$_4$Te$_5$

Magnetocrystalline Anisotropy and Magnetocaloric Effect Studies on the Room-temperature 2D Ferromagnetic Cr$_4$Te$_5$

High Magnetic Anisotropy and Magnetocaloric Effects in Single-Crystal Cr₂Te₃

Observation of Colossal Topological Hall Effect in Noncoplanar Ferromagnet Cr₅Te₆ Thin Films

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Multiple magnetic phase transitions and critical behavior in single crystal Cr5Te6

Cited by 9 publications

References 42 publications

Magnetocrystalline Anisotropy and Magnetocaloric Effect Studies on the Room-temperature 2D Ferromagnetic Cr$_4$Te$_5$

Magnetocrystalline Anisotropy and Magnetocaloric Effect Studies on the Room-temperature 2D Ferromagnetic Cr$_4$Te$_5$

High Magnetic Anisotropy and Magnetocaloric Effects in Single-Crystal Cr2Te3

Observation of Colossal Topological Hall Effect in Noncoplanar Ferromagnet Cr5Te6 Thin Films

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Product

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High Magnetic Anisotropy and Magnetocaloric Effects in Single-Crystal Cr₂Te₃

Observation of Colossal Topological Hall Effect in Noncoplanar Ferromagnet Cr₅Te₆ Thin Films