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We report a systematic investigation of dc magnetization and ac susceptibility, as well as anisotropic magnetocaloric effect in bulk CrI$_3$ single crystals. A second-stage magnetic transition was observed just below the Curie temperature…

强关联电子 · 物理学 2018-05-22 Yu Liu , C. Petrovic

We report the results of the pressure-dependent measurements of the static magnetization and of the ferromagnetic resonance (FMR) of Cr$_2$Ge$_2$Te$_6$ to address the properties of the ferromagnetic phase of this quasi-two-dimensional van…

In the quest for two-dimensional conducting materials with high ferromagnetic ordering temperature the new family of the layered Fe$_{n}$GeTe$_{2}$ compounds, especially the near-room-temperature ferromagnet Fe$_{4}$GeTe$_{2}$, receives a…

We successfully grew the high-quality single crystals of $A_{x}$Fe$_2$Se$_2$ ($A$ = K and Cs) by self-flux method. Sharp superconducting transition was observed for both types of crystals. The crystals show the onset superconducting…

超导电性 · 物理学 2011-07-07 J. J. Ying , X. F. Wang , X. G. Luo , A. F. Wang , M. Zhang , Y. J. Yan , Z. J. Xiang , R. H. Liu , P. Cheng , G. J. Ye , X. H. Chen

We propose two-dimensional (2D) Ising-type ferromagnetic semiconductors TcSiTe3, TcGeSe3, and TcGeTe3 with high Curie temperatures around 200-0500 K. Owing to large spin-orbit couplings, the large magnetocrystalline anisotropy energy (MAE),…

材料科学 · 物理学 2020-01-07 Jing-Yang You , Zhen Zhang , Xue-Juan Dong , Bo Gu , Gang Su

To broaden the scope of van der Waals 2D magnets, we report the synthesis and magnetism of covalent 2D magnetic Cr$_2$Te$_3$ with a thickness down to one-unit-cell. The 2D Cr$_2$Te$_3$ crystals exhibit robust ferromagnetism with a Curie…

Self-intercalated chromium tellurides Cr1+xTe2 have garnered growing attention due to their high-temperature ferromagnetism, tunable spin structures and air stability, all of which are vital for versatile applications in next-generation…

Systematically magnetic and magnetothermal measurements at temperatures down to 2 K and magnetic fields up to 13.5 Tesla for Gd(OH)3 Single Crystal Nanowires - Quasi-1D Large Spin (S = -7/2) Chain Antiferromagnet have been conducted. We…

材料科学 · 物理学 2012-07-16 R. Zeng , C. F. Zhang , J. C. Debnath , P. Shamba , J. L. Wang , Z. X. Chen , Z. P. Guo , S. X. Dou

We report the crystal growth and structural, magnetic, conductivity, and specific heat investigations of Rb(1-x)Fe(2-y)Se2 single crystals with varying stoichiometry prepared by self-flux and Bridgman methods. The system exhibits a strongly…

超导电性 · 物理学 2011-11-01 V. Tsurkan , J. Deisenhofer , A. Günther , H. -A. Krug von Nidda , S. Widmann , A. Loidl

With a surge of interest in spintronics, the manipulation and detection of colossal magnetoresistance in quasi-two-dimensional layered magnetic materials have become a key focus, driven by their relatively scarce occurrence compared to…

材料科学 · 物理学 2025-02-27 Suman Kalyan Pradhan , Weiqi Liu , Jicheng Wang , Yongli Yu , Wenxing Chen , Jinbo Yang , Yanglong Hou , Rui Wu

Ferromagnetic semiconductors discovered in two-dimensional (2D) materials open an avenue for highly integrated and multifunctional spintronics. The Curie temperature (TC) of existed 2D ferromagnetic semiconductors is extremely low and the…

材料科学 · 物理学 2021-11-02 Wenxuan Zhu , Cheng Song , Lei Han , Hua Bai , Qian Wang , Siqi Yin , Lin Huang , Tongjin Chen , Feng Pan

Recent advances in two-dimensional materials have greatly expanded the family of ferromagnetic materials. The well-known 2D ferromagnets, such as CrI$_3$, Cr$_2$Ge$_2$Te$_6$, and Fe$_3$GeTe$_2$ monolayers, are characterized by…

材料科学 · 物理学 2025-09-03 Rui-Qi Wang , Tengfei Cao , Tian-Min Lei , Xie Zhang , Yue-Wen Fang

CrI3, which belongs to a rare category of two-dimensional (2D) ferromagnetic semiconductors, is of great interest for spintronic device applications. Unlike CrCl3 whose magnetism presents a 2D-Heisenberg behavior, CrI3 exhibits a larger van…

材料科学 · 物理学 2018-03-14 G. T. Lin , X. Luo , F. C. Chen , J. Yan , J. J. Gao , Y. Sun , W. Tong , P. Tong , W. J. Lu , Z. G. Sheng , W. H. Song , X. B. Zhu , Y. P. Sun

We report anisotropic magnetocaloric effect and magnetic critical behavior in van der Waals crystal CrCl$_3$. The maximum magnetic entropy change $-\Delta S_M^{max} \sim 14.6$ J kg$^{-1}$ K$^{-1}$ and the relative cooling power $RCP \sim…

材料科学 · 物理学 2020-07-16 Yu Liu , C. Petrovic

We report the crystal growth by chemical vapor transport together with a thorough structural and magnetic characterization of the quasi-2D magnets (Fe$_{1-x}$Ni$_x$)$_2$P$_2$S$_6$ with $x_\textrm{Ni} = \textrm{0, 0.3, 0.5, 0.7, 0.9 & 1}$.…

Magnetic anisotropy encodes key information about the free-energy landscape of magnetic materials, but its quantitative characterization often requires probes beyond conventional magnetometry. A quartz tuning-fork resonator provides direct…

材料科学 · 物理学 2026-03-17 Hengrui Gui , Zekai Shi , Jiawen Zhang , Yu Liu , Huiqiu Yuan , Lin Jiao

In two-dimensional (2D) magnetic systems, large magnetic anisotropy is needed to stabilize the magnetic order according to Mermin-Wagner theorem. Based on density functional theory (DFT) calculations, we propose that the magnetic…

材料科学 · 物理学 2020-11-04 Xuejuan-Dong , Jingyang-You , Zheng Zhang , Bo Gu , Gang Su

EuRhAl4Si2, crystallizes in tetragonal crystal structure and orders antiferromagnetically at ~12 K. The isothermal magnetization along the two principle directions is highly anisotropic despite Eu2+ being an S-state ion. The variation of…

强关联电子 · 物理学 2017-05-18 Arvind Maurya , A. Thamizhavel , P. Bonville , S. K. Dhar

Intrinsic, two-dimensional ferromagnetic semiconductors are an important class of materials for overcoming the limitations of dilute magnetic semiconductors for spintronics applications. CrSiTe$_3$ is a particularly interesting member of…

强关联电子 · 物理学 2015-10-06 T. J. Williams , A. A. Aczel , M. D. Lumsden , S. E. Nagler , M. B. Stone , J. -Q. Yan , D. Mandrus

Magnetoresistivity measurements with fine tuning of the field direction on high quality single crystals of the ferromagnetic superconductor UCoGe show anomalous anisotropy of the upper critical field H_c2. H_c2 for H // b-axis (H_c2^b) in…

强关联电子 · 物理学 2011-08-26 Dai Aoki , Tatsuma D. Matsuda , Valentin Taufour , Elena Hassinger , Georg Knebel , Jacques Flouquet