Zobrazeno 1 - 10
of 410
pro vyhledávání: '"V. Jaccarino"'
Linear magnetic birefringence Δnm was used to study the concentration dependence of both the total magnetic specific heat Cm and critical amplitudes in the random exchange Ising model (REIM) system FexZn1−xF2. We find the proportionality between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cb722f1478316e519edd2f7b463d59b
https://ora.ox.ac.uk/objects/uuid:fb79bbca-916e-4d1c-b413-f1cb266dabbb
https://ora.ox.ac.uk/objects/uuid:fb79bbca-916e-4d1c-b413-f1cb266dabbb
Optical birefringence studies of the randomly diluted, $d=3$ Ising antiferromagnet ${\mathrm{Fe}}_{0.6}$${\mathrm{Zn}}_{0.4}$${\mathrm{F}}_{2}$ reveal that the magnetic specific heat exhibits a symmetric logarithmic singularity, consistent with an ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::819e87599faaf127859cdb92d11068ef
https://doi.org/10.1103/physrevb.28.2522
https://doi.org/10.1103/physrevb.28.2522
Publikováno v:
Physical Review B. 48:8365-8375
Thermal-expansion measurements of (${\mathrm{FeF}}_{2}$${)}_{\mathit{n}}$(${\mathrm{ZnF}}_{2}$${)}_{\mathit{m}}$ magnetic/nonmagnetic superlattices via high-resolution x-ray diffraction have been made throughout the antiferromagnetic phase-transition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5839918ee3acc0b037ad2b0764c3ad37
https://doi.org/10.1103/physrevb.48.8365
https://doi.org/10.1103/physrevb.48.8365
Publikováno v:
Physical Review B. 47:5805-5808
We report on an observation of random-exchange (RE) critical behavior in a mixed three-dimensional Ising system. Using capacitance measurements, we have determined the critical-behavior universality class and the Neel temperature, T N (x), as a funct
Externí odkaz:
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https://doi.org/10.1103/physrevb.47.5805
https://doi.org/10.1103/physrevb.47.5805
Publikováno v:
Physical Review B. 44:2161-2168
Neutron-scattering studies (elastic and quasielastic) have been made on ${\mathrm{Fe}}_{0.31}$${\mathrm{Zn}}_{0.69}$${\mathrm{F}}_{2}$, both at H=0 and in fields H\ensuremath{\le}5 T collinear with the unique axis. (For the ${\mathrm{Fe}}_{\mathit{x}
Externí odkaz:
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https://doi.org/10.1103/physrevb.44.2161
https://doi.org/10.1103/physrevb.44.2161
Publikováno v:
Physical Review B. 44:2155-2160
The evolution of the {ital d}=3 random-field Ising model (RFIM) in the strong-dilution limit has been studied using Faraday-rotation techniques on the Ising antiferromagnet Fe{sub 0.31}Zn{sub 0.69}F{sub 2}. Particular attention has been given to the
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https://doi.org/10.1103/physrevb.44.2155
https://doi.org/10.1103/physrevb.44.2155
Publikováno v:
Physical Review B. 43:10797-10802
Etude de la proportionnalite entre les deplacements des temperatures transition induits par le champ magnetique, et des temperatures a l'equilibre, et le champ aleatoire des carres moyens de racines. On se place sur un large intervalle de concentrati
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https://doi.org/10.1103/physrevb.43.10797
https://doi.org/10.1103/physrevb.43.10797
Publikováno v:
Physical Review B. 43:1272-1275
Les etudes de susceptibilite-ac du systeme Fe 0,46 Zn 0,54 F 2 de type modele d'Insing a champ aleatoire dans l'intervalle des frequences 5×10 −3 ≤ω/2π≤10 5 Hz montrent que le comportement en echelle avec ω de la valeur du pic [χ' c (ω)]p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7abe5ecce6b7aed7517daac35397ab94
https://doi.org/10.1103/physrevb.43.1272
https://doi.org/10.1103/physrevb.43.1272
Autor:
A.R. King, V. Jaccarino
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 163:291-305
Theoretical and experimental studies of random magnets have generated considerable interest and controversy during the last decade. This critical review attempts to clarify experimental aspects of the REIM and, particularly, the RFIM problems in dilu
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https://doi.org/10.1016/0378-4371(90)90338-s
https://doi.org/10.1016/0378-4371(90)90338-s
Publikováno v:
Journal of Applied Physics. 69:5246-5248
The proportionality between the field‐induced shift ΔTc(H) of the transition temperature Tc(H) and the root‐mean‐square (rms) random‐field hRF was studied over a wide range of concentration (0.31≤x≤0.84) in the nearly ideal random‐fiel
Externí odkaz:
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https://doi.org/10.1063/1.348093
https://doi.org/10.1063/1.348093