Elastic domains in antiferromagnets on substrates.
نویسندگان
چکیده
We consider periodic domain structures which appear due to the magnetoelastic interaction if the antiferromagnetic crystal is attached to an elastic substrate. The peculiar behavior of such structures in an external magnetic field is discussed. In particular, we find the magnetic field dependence of the equilibrium period and the concentrations of different domains.
منابع مشابه
Monte Carlo studies of slow relaxation in diluted antiferromagnets.
Monte Carlo simulations of diluted Ising-type antiferromagnets in a uniform external magnetic field in three dimensions show rather strong irreversibilities in the magnetization and a slow relaxation of the remanent magnetization of the domain state. A detailed investigation of the domain state and its relaxation shows that for low temperatures domains are strongly pinned at vacancies and that ...
متن کاملDynamics of domains in diluted antiferromagnets
We investigate the dynamics of two-dimensional site-diluted Ising antiferromagnets. In an external magnetic field these highly disordered magnetic systems have a domain structure which consists of fractal domains with sizes on a broad range of length scales. We focus on the dynamics of these systems during the relaxation from a long-range ordered initial state to the disordered fractal-domain s...
متن کاملPolar antiferromagnets produced with orbital order.
Polar states are realized in pseudocubic manganite films fabricated on high-index substrates, in which a Jahn-Teller (JT) distortion remains an active variable. Several types of orbital orders (OOs) were found to develop large optical second harmonics, signaling broken-inversion symmetry distinct from their bulk forms and films on (100) substrates. The observed symmetry lifting and first-princi...
متن کاملNegative bulk modulus and possibility of loss of elastic stability near tricritical transitions in thin films on substrates
Negative bulk modulus and possibility of loss of elastic stability near tricritical transitions in thin films on substrates A. P. Levanyuk, S. A. Minyukov & I. B. Misirlioglu To cite this article: A. P. Levanyuk, S. A. Minyukov & I. B. Misirlioglu (2016) Negative bulk modulus and possibility of loss of elastic stability near tricritical transitions in thin films on substrates, Ferroelectrics, 5...
متن کاملNon-exponential relaxation in diluted antiferromagnets
Diluted Ising antiferromagnets in a homogenous magnetic field have a disordered phase for sufficiently large values of the field and for low temperatures. Here, the system is in a domain state with a broad size-distribution of fractal domains. We study the relaxation dynamics of this domain state after removing the external field for two and three dimensions. Using Monte Carlo simulation techni...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Physical review letters
دوره 97 6 شماره
صفحات -
تاریخ انتشار 2006