De Haas-van Alphen effect, magnetization, magnetoresistance and magnetostriction of Gd[B.sub.4] as compared with Tm[B.sub.4]

• Published in: The European physical journal. B, Condensed matter physics Vol. 85; no. 8
• Main Authors: Pluzhnikov, V, Nizhankovskii, V.I, Ievdokimova, A, Shitsevalova, N
• Format: Journal Article
• Language: English
• Published: Springer 01-08-2012
• Subjects: Analysis; Anisotropy; Magnetic fields; Magnetization; Toy industry
• ISSN: 1434-6028; 1434-6036
• DOI: 10.1140/epjb/e2012-20636-y

De Haas-van Alphen (dHvA) effect measurements were performed on Gd[B.sub.4] single crystal ([R.sub.300] K]/[R.sub.4.2 K] ≅ 12) in AFM state from 1.5 to 4.2 K in magnetic fields up to 14 T. 12 main branches of the oscillations were observed in the frequency range (0.1 / 28) x [10.sup.2] T. The angular dependence of the dHvA spectrum suggests a strongly anisotropic Fermi surface. Corresponding cyclotron masses [m.sup.*.sub.c] are light, ranging from 0.2 to 0.8[m.sub.0.] We studied additionally the magnetization of Gd[B.sub.4], linear and volume magnetostriction, and magnetoresistance of Gd[B.sub.4] in comparison with the same properties of Tm[B.sub.4] single crystal above 1.5 K in the field of 0 -± / 14 T. At 4.2 K and H ∥ (110) collinear to the Gd[B.sub.4] easy magnetization axis the volume magnetostriction revealed the lattice contraction with the field rise excluding the range of H ≅ (11 -±- 13) T, where the lattice expansion is accompanied by a sharp magnetization increase due to the destruction of its non-collinear magnetic structure. The magnetostricive behavior in Gd[B.sub.4] and Tm[B.sub.4] is different due to the CEF effect.