title: Single crystal study of the heavy-fermion antiferromagnet CePt₂In₇.
abstract: We report the synthesis, structure, and physical properties of single crystals of CePt(2)In(7). Single crystal x-ray diffraction analysis confirms the tetragonal I4/mmm structure of CePt(2)In(7) with unit cell parameters a = 4.5886(6) Å, c = 21.530(6) Å and V = 453.32(14) Å(3). The magnetic susceptibility, heat capacity, Hall effect and electrical resistivity measurements are all consistent with CePt(2)In(7) undergoing an antiferromagnetic order transition at T(N) = 5.5 K, which is field independent up to 9 T. Above T(N), the Sommerfeld coefficient of specific heat is γ ≈ 300 mJ mol(-1) K(-2), which is characteristic of an enhanced effective mass of itinerant charge carriers. The electrical resistivity is typical of heavy-fermion behavior and gives a residual resistivity ρ(0) ∼ 0.2 µΩ cm, indicating good crystal quality. CePt(2)In(7) also shows moderate anisotropy of the physical properties that is comparable to structurally related CeMIn(5) (M = Co, Rh, Ir) heavy-fermion superconductors.
authors: Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
authors: Paul H
authors: PH
authors: Tobash
authors: F
authors: F
authors: Ronning
authors: J D
authors: JD
authors: Thompson
authors: B L
authors: BL
authors: Scott
authors: P J W
authors: PJ
authors: Moll
authors: B
authors: B
authors: Batlogg
authors: E D
authors: ED
authors: Bauer