title: Characteristics of a granular electronic system in Heusler-type Fe2+xV1-xAl.
abstract: We report comprehensive measurements of the magnetic, transport, and thermal properties of the Heusler-type compound Fe2+xV1-xAl, with x values near the ferromagnetic quantum critical point, xc ∼ 0.05. At T ∼ 60 K, a prominent Schottky-like anomaly appeared in the specific heat; this anomaly was correlated with a smaller pseudo-gap formation in magnetic susceptibility, magnetoresistance, and thermoelectric power. Furthermore, a magnetic anomaly observed in the magnetic susceptibility and resistivity at T ∼ 4 K was suppressed significantly by applying a magnetic field. A magnetically inhomogeneous phase arose below T ∼ 60 K, which appeared to consist of ferromagnetic and paramagnetic clusters.
authors.affiliation: National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan. NAKA.Takashi@nims.go.jp
authors.forename: T
authors.initials: T
authors.lastname: Naka
authors.forename: K
authors.initials: K
authors.lastname: Sato
authors.forename: M
authors.initials: M
authors.lastname: Taguchi
authors.forename: N
authors.initials: N
authors.lastname: Shirakawa
authors.forename: T
authors.initials: T
authors.lastname: Nakane
authors.forename: F
authors.initials: F
authors.lastname: Ishikawa
authors.forename: Yuh
authors.initials: Y
authors.lastname: Yamada
authors.forename: Y
authors.initials: Y
authors.lastname: Takaesu
authors.forename: T
authors.initials: T
authors.lastname: Nakama
authors.forename: A
authors.initials: A
authors.lastname: Matsushita
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D018360:Crystallography, X-Ray; D060526:Magnetic Fields; D059346:Magnets / Q000737:chemistry*; D008958:Models, Molecular; D011789:Quantum Theory; D013696:Temperature; D014639:Vanadium / Q000737:chemistry*
chemical_list: D014639:Vanadium; D000535:Aluminum