Spin-glass transition in single-crystal

MK Singh, W Prellier, MP Singh, RS Katiyar… - Physical Review B …, 2008 - APS
Magnetic properties of Bi Fe O 3 (BFO) single crystals with rhombohedral symmetry (R 3 c)
were measured in the temperature range of 4.2–350 K. Zero field cooled (ZFC) and field …

New magnetic phase transitions in BiFeO3

MK Singh, RS Katiyar, JF Scott - Journal of Physics: Condensed …, 2008 - iopscience.iop.org
We observed Raman scattering from magnons in the frequency range from 10 to 65 cm− 1 in
BiFeO 3 single crystals at cryogenic temperatures; the temperature dependence of the …

Vector precoding for wireless MIMO systems and its replica analysis

RR Muller, D Guo, AL Moustakas - IEEE Journal on Selected …, 2008 - ieeexplore.ieee.org
This paper studies a nonlinear vector precoding scheme which inverts the wireless multiple-
input multiple-output (MIMO) channel at the transmitter so that simple symbol-by-symbol …

The Almeida–Thouless line in BiFeO3: is bismuth ferrite a mean field spin glass?

MK Singh, RS Katiyar, W Prellier… - Journal of Physics …, 2008 - iopscience.iop.org
Low-temperature magnetic properties of epitaxial BiFeO 3 (BFO) thin films grown on (111)
SrTiO 3 substrates have been studied. Zero-field-cooled and field-cooled magnetization …

Elastic and electrical anomalies at low-temperature phase transitions in BiFeO3

SAT Redfern, C Wang, JW Hong… - Journal of Physics …, 2008 - iopscience.iop.org
Our measured dielectric constant and mechanical response of multiferroic BiFeO 3 indicate
four phase transitions below room temperature. Features correlate with those reported at 50 …

Critical phenomena at the 140 and 200 K magnetic phase transitions in BiFeO3

JF Scott, MK Singh, RS Katiyar - Journal of Physics: Condensed …, 2008 - iopscience.iop.org
We have measured the magnon Raman cross-sections for bismuth ferrite as a function of
temperature near the newly discovered magnetic phase transitions near T 2= 140.3±0.2 K …

Some considerations of finite-dimensional spin glasses

G Parisi - Journal of Physics A: Mathematical and Theoretical, 2008 - iopscience.iop.org
In this paper I will review the theoretical results that have been obtained for spin glasses,
paying particular attention to finite-dimensional spin glasses. I will concentrate my attention …

Effect of hot pressing on processing and properties of BBN ceramics

M Adamczyk, L Kozielski, M Pawełczyk - Ceramics international, 2008 - Elsevier
BBN (BaBi2Nb2O9) is very interesting and promising lead free material with relaxor
properties in capacitors, sensors and actuators. Results of investigations of fine-grained …

Synthesis and characterization of Cu3TaIn3Se7 and CuTa2InTe4

P Grima‐Gallardo, E Calderón… - … status solidi (a), 2008 - Wiley Online Library
Abstract Polycrystalline samples of Cu3TaIn3Se7 and CuTa2InTe4 were synthesized by the
usual melt and anneal technique. X‐ray powder diffraction showed a single phase behavior …

The out-of-equilibrium dynamics of the Sherrington–Kirkpatrick model

LF Cugliandolo, J Kurchan - Journal of Physics A: Mathematical …, 2008 - iopscience.iop.org
The analytic solution to the dynamics of the Sherrington–Kirkpatrick model was developed in
the 1990s. It involves directly measurable out-of-equilibrium quantities, and thus addresses …