TITLE

Low energy vibrational excitations in silver borate glasses

AUTHOR(S)
Bartolotta, A.; Carini, G.; D’Angelo, G.; Salvato, G.; Tripodo, G.
PUB. DATE
April 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 513 Issue 1, p27
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Analysis of low temperature specific heat data (1.5 K–25 K) in two glasses of the AgI-Ag[sub 2]O-B[sub 2]O[sub 3] system reveals that the temperature dependencies of C[sub p] are in qualitative agreement with the predictions of the Soft Potential Model. It has been also found that a decreasing connectivity of the network enhances the deviations of C[sub p] from a T[sup 3] behavior. © 2000 American Institute of Physics.
ACCESSION #
6028431

 

Related Articles

  • Spin glass properties of Y[sub 0.7]Ca[sub 0.3]MnO[sub 3] and Th[sub 0.35]Ba[sub 0.37]Ca[sub 0.28]MnO[sub 3]. Sedmidubsky´, D.; Hejtma´nek, J.; Marysˇko, M.; Jira´k, Z.; Hardy, V.; Martin, C. // Journal of Applied Physics;5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p8260 

    Two perovskite manganites with the same nominal concentration of Mn[sup 4+] have been studied by the magnetic susceptibility and specific heat measurements: the Ysub 0.7] Ca[sub 0.3] MnO[sub 3] single crystal (YCa) with low tolerance factor and negligible ionic radii variance and the Th[sub...

  • Quantum Impurity in a Magnetic Environment. Sachdev, Subir // Journal of Statistical Physics;Apr2004, Vol. 115 Issue 1/2, p47 

    A unified perspective is given on a number of different problems involving the coupling of a localized quantum spin degree of freedom to the low energy excitations of an antiferromagnet, a spin glass, or a Kondo insulator. The problems are related to those in the class often referred to as...

  • Non-Fermi-liquid behavior in the layered NaxCoO2. Zorkovská, A.; Feher, A.; Šebek, J.; Šantavá, E.; Bradaric, I. // Low Temperature Physics;Nov2007, Vol. 33 Issue 11, p944 

    The specific heat in the temperature region from 100 mK to 360 K and in magnetic fields of 0 and 9 T and the susceptibility from 2 to 360 K and in a magnetic field of 1 T are measured in the layered NaxCoO2 (x=0.65, 0.70, and 0.75) oxides. Analysis of the data revealed non-Fermi-liquid behavior....

  • Low-Temperature Anomalies in Interacting Dipolar Rotors. Shima, Hiroyuki; Nakayama, Tsuneyoshi // AIP Conference Proceedings;2006, Vol. 850 Issue 1, p1305 

    We theoretically investigate the interaction effect between oxygen impurities in crystalline germanium on the basis of a quantum rotor model. The dipolar interaction between nearby oxygen impurities engenders non-trivial low-lying excitations that give rise to power-law specific heats below 0.1...

  • Evidence for Ballistic Thermal Conduction in the One-Dimensional Spin System Sr2CuO3. Takahashi, N.; Kawamata, T.; Adachi, T.; Noji, T.; Koike, Y.; Kudo, K.; Kobayashi, N. // AIP Conference Proceedings;2006, Vol. 850 Issue 1, p1265 

    We have measured the thermal conductivity along the b axis, κb parallel to the one-dimensional (1D) spin chain of Sr2Cu1-xPdxO3 single crystals including nonmagnetic impurities of Pd2+, in order to investigate possible ballistic thermal conduction. It has been found that the mean free path of...

  • Field-Induced Magnetic Ordering in an S = 1/2 Quasi-One-Dimensional Quantum Spin System: (CH3)2NH2Cucl3. Wada, Osamu; Yoshida, Yasuo; Inagaki, Yuji; Asano, Takayuki; Kawae, Tatsuya; Takeo, Kenji; Sakon, Takuo; Takeda, Kazuyoshi; Motokawa, Mitsuhiro; Ajiro, Yoshitami // AIP Conference Proceedings;2006, Vol. 850 Issue 1, p1017 

    Specific heat measurements of the quasi-one-dimensional S = 1/2 quantum spin system (CH3)2NH2CuCl3 have been carried out in a magnetic field up to H=8 T. This compound shows a 1/2 magnetization plateau between 2 T and 3.5 T and the magnetization saturates at H=14 T. We observed field-induced...

  • Monte Carlo Simulation of Ising Spins on Triangular Lattice with Different Exchange Couplings. Bannora, Khalid; Ismail, G.; Zeid, M. Abu // Egyptian Journal of Solids;2008, Vol. 31 Issue 2, p157 

    The magnetization, magnetic susceptibility, internal energy and magnetic specific heat are calculated by using Monte Carlo simulation. It was applied for spin glasses (SG), ± J model, ferromagnetic (FM), and anti-ferromagnetic (AFM) systems on Siérpinski gasket of less than or equal to 366...

  • Analysis of the Low Temperature Magnetic Contributions to the Specific Heat of (NdY)CaMnO ( x=0, 0.1). Feher, A.; Dolya, S.; Fertman, E.; Kajňaková, M.; Desnenko, V.; Šebek, J.; Šantavá, E. // Journal of Low Temperature Physics;Mar2011, Vol. 162 Issue 5/6, p529 

    The low temperature specific heat of the colossal magnetoresistance compounds (NdY)CaMnO ( x=0, 0.1) for 0.4≤ T<2 K in magnetic fields up to H=9 T has been studied. Applied magnetic fields lead to the drop of the low temperature specific heat by more than 2 orders, which implies a large...

  • Finite-Size Scaling in the Energy-Entropy Plane for the 2D ± Ising Spin Glass. Fisch, Ronald // Journal of Statistical Physics;Nov2006, Vol. 125 Issue 3, p773 

    For L × L square lattices with L ≤ 20 the 2D Ising spin glass with +1 and −1 bonds is found to have a strong correlation between the energy and the entropy of its ground states. A fit to the data gives the result that each additional broken bond in the ground state of a...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics