Spin-Glass Transition in the RCoGaO_{4} (R=Lu, Yb) Layered Cobaltites

• Authors: I. Radelytskyi , R. Szymczak , H. Dabkowska , H. Noad , P. Aleshkevych , H. Szymczak
• Languages of publication: EN

Abstracts

EN

The frequency, temperature, and the dc and ac dependences of the magnetic susceptibility of the YbCoGaO_{4} and LuCoGaO_{4} single crystals are investigated. The YbCoGaO_{4} behaves like an Ising spin glass with a strong uniaxial anisotropy. In contrast LuCoGaO_{4} is Heisenberg-like spin glass. Dynamical scaling reveals a three dimensional phase transition near Tg and yields critical exponent values between those of Heisenberg- andIsing-like systems.

Keywords

EN

75.30.Cr; 75.30.Gw; 75.30.Kz; 75.40.-s; 75.50.Lk

Discipline

• 75.30.Cr: Saturation moments and magnetic susceptibilities
• 75.30.Gw: Magnetic anisotropy
• 75.50.Lk: Spin glasses and other random magnets
• 75.40.-s: Critical-point effects, specific heats, short-range order(for equilibrium properties near critical points, see 64.60.F-; for dynamical critical phenomena, see 64.60.Ht)
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 230-231

Dates

published

2014-07

Contributors

author

I. Radelytskyi

• Institute of Physics PAS, al. Lotnikow 32/46, 02 668 Warszawa, Poland

author

R. Szymczak

• Institute of Physics PAS, al. Lotnikow 32/46, 02 668 Warszawa, Poland

author

H. Dabkowska

• Brockhouse Institute for Materials Research, McMaster University, Hamilton, Ontario, Canada

author

H. Noad

• Brockhouse Institute for Materials Research, McMaster University, Hamilton, Ontario, Canada

author

P. Aleshkevych

• Institute of Physics PAS, al. Lotnikow 32/46, 02 668 Warszawa, Poland

author

H. Szymczak

• Institute of Physics PAS, al. Lotnikow 32/46, 02 668 Warszawa, Poland

References

• [1] D.M. Cragg, D. Sherrington, Phys. Rev. Lett. 49, 1190 (1982), doi: 10.1103/PhysRevLett.49.1190
• [2] Y. Yeshurun, H. Sompolinsky, Phys. Rev. B 31, 3191 (1985), doi: 10.1103/PhysRevB.31.3191
• [3] R. Szymczak, H.A. Dabkowska, A. Dabkowski, G.M. Luke, P. Aleshkevych, J. Fink-Finowicki, H. Szymczak, Journal of Physics 303, 012064 (2011), doi: 10.1088/1742-6596/303/1/012064
• [4] H.A. Dabkowska, A. Dabkowski, G.M. Luke, B.D. Gaulin, J. Cryst. Growth 234, 411 (2002)
• [5] M. Continentino, A.P. Malozemoff, Phys. Rev. B 34, 471 (1986), doi: 10.1103/PhysRevB.34.471
• [6] S. Geschwind, D.A. Huse, G.E. Devlin, Phys. Rev. B 41, 4854 (1990), doi: 10.1103/PhysRevB.41.4854

Identifiers

DOI

10.12693/APhysPolA.126.230