scholarly journals Order-disorder transition in a two-layer quantum antiferromagnet

1994 ◽  
Vol 72 (17) ◽  
pp. 2777-2780 ◽  
Author(s):  
A. W. Sandvik ◽  
D. J. Scalapino
Keyword(s):  
Disorder Transition ◽  
Quantum Antiferromagnet

scholarly journals Alloying effect on the order–disorder transformation in tetragonal FeNi

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Li-Yun Tian ◽  
Oliver Gutfleisch ◽  
Olle Eriksson ◽  
Levente Vitos
Keyword(s):  
Transition Temperature ◽  
High Performance ◽  
Density Functional ◽  
Permanent Magnets ◽  
Positive Impact ◽  
Design Strategies ◽  
Alloying Effect ◽  
Functional Theory ◽  
Disorder Transition ◽  
Disorder Transition Temperature

AbstractTetragonal ($${\hbox{L1}}_{0}$$ L1 0 ) FeNi is a promising material for high-performance rare-earth-free permanent magnets. Pure tetragonal FeNi is very difficult to synthesize due to its low chemical order–disorder transition temperature ($$\approx {593}$$ ≈ 593  K), and thus one must consider alternative non-equilibrium processing routes and alloy design strategies that make the formation of tetragonal FeNi feasible. In this paper, we investigate by density functional theory as implemented in the exact muffin-tin orbitals method whether alloying FeNi with a suitable element can have a positive impact on the phase formation and ordering properties while largely maintaining its attractive intrinsic magnetic properties. We find that small amount of non-magnetic (Al and Ti) or magnetic (Cr and Co) elements increase the order–disorder transition temperature. Adding Mo to the Co-doped system further enhances the ordering temperature while the Curie temperature is decreased only by a few degrees. Our results show that alloying is a viable route to stabilizing the ordered tetragonal phase of FeNi.

Order-disorder transition on Si(001): c(4×2) to (2×1)

1987 ◽  
Vol 179 (1) ◽  
pp. L63-L70 ◽  
Author(s):  
Takeshi Tabata ◽  
Tetsuya Aruga ◽  
Yoshitada Murata
Keyword(s):  
Disorder Transition

scholarly journals Flow-Induced Structure and Viscoelastic Properties of Poly(styrene-block-2-vinylpyridine)s Solutions near the Order–Disorder Transition

2005 ◽  
Vol 37 (12) ◽  
pp. 894-899 ◽  
Author(s):  
Yoshiaki Takahashi ◽  
Masahiro Noda ◽  
Shinichi Kitade ◽  
Kouki Matsuoka ◽  
Yushu Matsushita ◽  
...  
Keyword(s):  
Viscoelastic Properties ◽  
Disorder Transition ◽  
Induced Structure

scholarly journals Late-time theory for the effects of a conserved field on the kinetics of an order-disorder transition

1991 ◽  
Vol 44 (13) ◽  
pp. 6673-6688 ◽  
Author(s):  
K. R. Elder ◽  
B. Morin ◽  
Martin Grant ◽  
R. C. Desai
Keyword(s):  
Late Time ◽  
Disorder Transition ◽  
Kinetics Of ◽  
Time Theory
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