Study on CePtIn4 grown in a platelet-like morphology

Abstract

We present the results of our comprehensive structural investigation performed on single crystals of CePtIn4 grown from In flux in a platelet-like morphology. They were found to crystalize in an orthorhombic structure having space group Cmcm (no. 63) with the lattice parameters a = 4.52175 (15) Å, b = 16.7777 (5) Å, and c = 7.3903 (2) Å. The unit cell volume of such crystals is slightly larger than that of previously reported needle-shaped single crystals of CePtIn4. This feature seems to influence the low-temperature physical properties of the compound, such as enhanced ordering temperature (TN = 2.3 K versus 1.65 K, observed before) along with a sharp drop in the electrical resistivity at TN (that was absent for the needle-like CePtIn4).

Magnetic field-driven quantum criticality in antiferromagnetic CePtIn 4

“…It is important to note that at zero applied field, apart from the sharp anomaly at TN, there exists another broad anomaly at ∼ 1 K (for better visualization see Ref. [32] and Fig. S 4 in Supplementary Material [34]) which is not influenced by the applied field up to 1.3 T. Notably, at 1.4 T, this anomaly becomes considerably sharp and we observe two distinct transitions.…”

“…In our ongoing quest to synthesize CePtIn5, we recently discovered a novel phase CePtIn4 grown in a platelet like morphology crystallizing in an orthorhombic structure (Cmcm, Space group No. 63) [32]. Surprisingly, in contrast to needle shape crystals reported by Bławat et al [33], platelet like crystals exhibit slightly elevated TN = 2.3 K [32] due to the ordering of Ce 3+ moments.…”

“…63) [32]. Surprisingly, in contrast to needle shape crystals reported by Bławat et al [33], platelet like crystals exhibit slightly elevated TN = 2.3 K [32] due to the ordering of Ce 3+ moments. This enhancement in TN can be due to enlarged unit cell volume.…”

“…Single crystals of CePtIn4 were grown using In flux method as outlined in our previous report [32]. We obtained plate like crystals grown along crystallographic b-axis.…”

Observation of antiferromagnetic and superconducting phases in polycrystalline Ce3PtIn11

“…Newest member of this class of compounds is CePtIn4 exhibiting antiferromagnetic (AFM) ordering which can be suppressed to a QCP by applying external magnetic field [12,13]. In this framework, Ce3TIn11 (T = Pt and Pd) compounds have reinvigorated the interest in heavy-fermion superconductivity mainly due to threefold reasons: (i) the coexistence of superconductivity and long-range AFM orderings at low temperatures, (ii) the occurrence of two inequivalent Ce sites in the crystallographic unit cell, which possibly may harbor these two diverse cooperative phenomena, (iii) the perplexing phase diagram under applied fields and pressure [7][8][9][10][11].…”