Reanalysis of "Dilute random-field Ising models and uniform-field antiferromagnets"

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Dilute random-field Ising models and uniform-field antiferromagnets.

The order-parameter susceptibility χ of dilute Ising models with random fields and dilute antiferromagnets in a uniform field are studied for low temperatures and fields with use of low-concentration expansions, scaling theories, and exact solutions on the Cayley tree to elucidate the behavior near the percolation threshold at concentration pc. On the Cayley tree, as well as for d>6, both model...

متن کامل

Reanalysis of "Dilute random-field Ising models and uniform-field antiferromagnets"

The susceptibility series presented by Aharony, Harris, and Meir [Phys. Rev. B 32 3203 (1985)] for the random-field Ising model and dilute antiferromagnet in a field are reanalyzed. This reanalysis utilizes improved methods of power-series analysis, more recent pc estimates, and a redefined constant term. We also invoke updated exponent estimates for comparison with our results, and find that n...

متن کامل

Random–Field Ising Models of Hysteresis

This is a review article of our work on hysteresis, avalanches, and criticality. We provide an extensive introduction to scaling and renormalization–group ideas, and discuss analytical and numerical results for size distributions, correlation functions, magnetization, avalanche durations and average avalanche shapes, and power spectra. We focus here on applications to magnetic Barkhausen noise,...

متن کامل

Random Field Ising Model

This paper gives an introduction to the Random Field Ising Model (RFIM). Since its rst discussion in the paper by Imry and Ma 1] there has been great interest in this model, since Ising or Ising-like systems in random elds are a good representation of a large number of impure materials. These show features that can not be understood by studying ideal systems (i.e. Ising model). There are a lot ...

متن کامل

Continuous versus First Order Transition in Dilute Ising Antiferromagnets in a Field

A systematic Monte Carlo investigation of dilute Ising antiferromagnets in a uniform field as function of both dilution and ratio a! of nnn to nn interactions on a cubic lattice is presented. A tricritical point is found in the range of dilution 0 5 p 5 0.3 for a ratio a = -0.5. Increasing p makes the first order region to shrink. On the other hand increasing or enlarges it. We present a new pr...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical Review B

سال: 1986

ISSN: 0163-1829

DOI: 10.1103/physrevb.34.3469