Uspekhi Fizicheskikh Nauk
RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB  
General information
Latest issue
Forthcoming papers
Archive
Impact factor
Guidelines for authors
Submit a manuscript

Search papers
Search references

RSS
Latest issue
Current issues
Archive issues
What is RSS



UFN:
Year:
Volume:
Issue:
Page:
Find






Personal entry:
Login:
Password:
Save password
Enter
Forgotten password?
Register


Uspekhi Fizicheskikh Nauk, 1983, Volume 140, Number 4, Pages 639–669
DOI: https://doi.org/10.3367/UFNr.0140.198308c.0639
(Mi ufn8685)
 

This article is cited in 15 scientific papers (total in 15 papers)

REVIEWS OF TOPICAL PROBLEMS

Second-order phase transitions in ferromagnetic materials in weak fields near the Curie point

I. K. Kamilov, Kh. K. Aliev

Daghestan State University, Makhachkala
Abstract: A review is given of the present state of theoretical and experimental research on second-order phase transitions in anisotropic and nonunifonnly magnetized ferromagnetic and ferrimagnetic materials and on phenomena observed near the Curie point in weak magnetic fields ($H<H_A$, $H_d$, where $H_A$ and $H_d$ are the anisotropy field and demagnetizing field, respectively). The nature of these transitions is examined, and it is shown that for anisotropic and nonunifonnly magnetized ferromagnetic materials the Curie point is not an isolated point on the $H$$T$ plane. The experimental and theoretical data indicate the existence of a line of second-order phase transitions in a magnetic field applied in certain definite directions with respect to the anisotropy axis. This line of transitions is described by the law $T_C(H)=T_C(0)(1– AH^\omega)$; theoretical estimates in the molecular-field approximation yield values $\omega=2$ for ferromagnetic materials of the easy-axis and easy-plane type and $\omega=2/3$ for cubic ferromagnetic materials. The experimental results on the equilibrium properties (the magnetization, susceptibility, specific heat, magnetostriction, Faraday effect, etc.) and dynamic properties (the speed and attenuation rate of ultrasonic waves, the dynamic susceptibility) not only confirm the existence of a line of phase transitions but also indicate that spin fluctuations play a decisive role in the formation of the transition between ferromagnetic and paramagnetic phases in a weak magnetic field.
English version:
Physics–Uspekhi, 1983, Volume 26, Issue 8, Pages 696–712
DOI: https://doi.org/10.1070/PU1983v026n08ABEH004483
Document Type: Article
UDC: 536.764:538.114
PACS: 75.30.Kz, 75.30.Gw, 75.40.-s
Language: Russian
Citation: I. K. Kamilov, Kh. K. Aliev, “Second-order phase transitions in ferromagnetic materials in weak fields near the Curie point”, UFN, 140:4 (1983), 639–669; Phys. Usp., 26:8 (1983), 696–712
Citation in format AMSBIB
\Bibitem{KamAli83}
\by I.~K.~Kamilov, Kh.~K.~Aliev
\paper Second-order phase transitions in ferromagnetic materials in weak fields near the Curie point
\jour UFN
\yr 1983
\vol 140
\issue 4
\pages 639--669
\mathnet{http://mi.mathnet.ru/ufn8685}
\crossref{https://doi.org/10.3367/UFNr.0140.198308c.0639}
\transl
\jour Phys. Usp.
\yr 1983
\vol 26
\issue 8
\pages 696--712
\crossref{https://doi.org/10.1070/PU1983v026n08ABEH004483}
Linking options:
  • https://www.mathnet.ru/eng/ufn8685
  • https://www.mathnet.ru/eng/ufn/v140/i4/p639
  • This publication is cited in the following 15 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Успехи физических наук Physics-Uspekhi
    Statistics & downloads:
    Abstract page:49
    Full-text PDF :13
     
      Contact us:
     Terms of Use  Registration to the website  Logotypes © Steklov Mathematical Institute RAS, 2024