Observation of ferromagnetism in CeCr₂Si₂C single crystals

Abstract

RT2X2 compounds (R: rare compound; T: transition metals, X: Si, Ge) especially Ce-based compounds are important platforms for studying novel phenomena including magnetic behaviors, heavy Fermi superconductors, or Knodo effect,...

ThCr2Si2C: An Antiferromagnetic Metal with a Cr2C Square Lattice

“…The resistivity at 300 K is 1.08 mΩ·cm. This value is close to ThMo 2 Si 2 C, and is nearly 1 order of magnitude larger than that of CeCr 2 Si 2 C single crystal . The resistivity showed no anomaly at 2–390 K. The resistivity below 50 K can be well fitted using the equation ρ­( T ) = ρ 0 + AT 2 .…”

“…This value is close to ThMo 2 Si 2 C, 11 and is nearly 1 order of magnitude larger than that of CeCr 2 Si 2 C single crystal. 25 The resistivity showed no anomaly at 2−390 K. The resistivity below 50 K can be well fitted using the equation ρ(T) = ρ 0 + AT 2 . The fitting yields the parameters of ρ 0 = 0.76 mΩ•cm and A = 9.52 × 10 −6 mΩ• cm•K 2 .…”

Synthesis, crystal structure and physical properties of ThV2Si2C containing V2C square lattices

“…[29][30][31] However, based on the current study, we cannot provide sufficient evidence to clarify the superconductivity of the material. Synthesis of single crystals is necessary following the method of CeCr 2 Si 2 C. 27 In addition, the synthesis of such novel layer compounds is appealing for both the fundamental exploration of new properties and the investigation of potential physical mechanisms. Therefore, exploring whether bulk superconductivity can be induced through doping or pressure, as well as investigating the existence of isostructural compounds featuring the V 2 C square lattice, will be intriguing avenues of research.…”

“…[13][14][15][16][17][18][19][20] Concurrently, isostructural compounds denoted as RT 2 Si 2 C (R = rare earth, Th, U; T = Cr, Mo) have garnered considerable attention. [21][22][23][24][25][26][27][28] The Cr and Mo based analogues LnT 2 Si 2 C that feature 3d and 4d electrons display similar Pauli paramagnetic behavior, while ThCr 2 Si 2 C and UCr 2 Si 2 C exhibit antiferromagnetic (AFM) transitions within the Cr lattice above room temperature. [21][22][23]27,28 This seems to imply a potential correlation between the magnetic behavior observed in the chromium sublattice and the inuence exerted by band lling effects within the 3d orbitals.…”

“…[21][22][23][24][25][26][27][28] The Cr and Mo based analogues LnT 2 Si 2 C that feature 3d and 4d electrons display similar Pauli paramagnetic behavior, while ThCr 2 Si 2 C and UCr 2 Si 2 C exhibit antiferromagnetic (AFM) transitions within the Cr lattice above room temperature. [21][22][23]27,28 This seems to imply a potential correlation between the magnetic behavior observed in the chromium sublattice and the inuence exerted by band lling effects within the 3d orbitals. Peculiarly, ThMo 2 Si 2 C exhibits superconductivity below 2.2 K without an AFM transition.…”