Pressure-enhanced Insulating State and Trigonal Distortion Relaxation in Geometrically Frustrated Pyrochlore Eu2Sn2O7

2016 ◽  
Vol 120 (17) ◽  
pp. 9436-9442 ◽  
Author(s):  
Yongsheng Zhao ◽  
Wenge Yang ◽  
Nana Li ◽  
Yan Li ◽  
Ruilian Tang ◽  
...  
Keyword(s):  
Geometrically Frustrated ◽  
Trigonal Distortion

scholarly journals Magnetisation Processes in Geometrically Frustrated Spin Networks with Self-Assembled Cliques

Entropy ◽  
2020 ◽  
Vol 22 (3) ◽  
pp. 336 ◽  
Author(s):  
Bosiljka Tadić ◽  
Miroslav Andjelković ◽  
Milovan Šuvakov ◽  
Geoff J. Rodgers
Keyword(s):  
Domain Walls ◽  
Spin Dynamics ◽  
Higher Order ◽  
Spin Networks ◽  
Graph Theoretic ◽  
Geometrically Frustrated ◽  
Geometric Frustration ◽  
Antiferromagnetic Materials ◽  
Geometrically Constrained ◽  
Ferromagnetic Interactions

Functional designs of nanostructured materials seek to exploit the potential of complex morphologies and disorder. In this context, the spin dynamics in disordered antiferromagnetic materials present a significant challenge due to induced geometric frustration. Here we analyse the processes of magnetisation reversal driven by an external field in generalised spin networks with higher-order connectivity and antiferromagnetic defects. Using the model in (Tadić et al. Arxiv:1912.02433), we grow nanonetworks with geometrically constrained self-assemblies of simplexes (cliques) of a given size n, and with probability p each simplex possesses a defect edge affecting its binding, leading to a tree-like pattern of defects. The Ising spins are attached to vertices and have ferromagnetic interactions, while antiferromagnetic couplings apply between pairs of spins along each defect edge. Thus, a defect edge induces n − 2 frustrated triangles per n-clique participating in a larger-scale complex. We determine several topological, entropic, and graph-theoretic measures to characterise the structures of these assemblies. Further, we show how the sizes of simplexes building the aggregates with a given pattern of defects affects the magnetisation curves, the length of the domain walls and the shape of the hysteresis loop. The hysteresis shows a sequence of plateaus of fractional magnetisation and multiscale fluctuations in the passage between them. For fully antiferromagnetic interactions, the loop splits into two parts only in mono-disperse assemblies of cliques consisting of an odd number of vertices n. At the same time, remnant magnetisation occurs when n is even, and in poly-disperse assemblies of cliques in the range n ∈ [ 2 , 10 ] . These results shed light on spin dynamics in complex nanomagnetic assemblies in which geometric frustration arises in the interplay of higher-order connectivity and antiferromagnetic interactions.

scholarly journals Complex Ordered Patterns in Mechanical Instability Induced Geometrically Frustrated Triangular Cellular Structures

2014 ◽  
Vol 112 (9) ◽  
Author(s):  
Sung Hoon Kang ◽  
Sicong Shan ◽  
Andrej Košmrlj ◽  
Wim L. Noorduin ◽  
Samuel Shian ◽  
...  
Keyword(s):  
Cellular Structures ◽  
Mechanical Instability ◽  
Geometrically Frustrated

scholarly journals Artificial ‘spin ice’ in a geometrically frustrated lattice of nanoscale ferromagnetic islands

Nature ◽  
2006 ◽  
Vol 439 (7074) ◽  
pp. 303-306 ◽  
Author(s):  
R. F. Wang ◽  
C. Nisoli ◽  
R. S. Freitas ◽  
J. Li ◽  
W. McConville ◽  
...  
Keyword(s):  
Spin Ice ◽  
Artificial Spin Ice ◽  
Geometrically Frustrated ◽  
Frustrated Lattice

Low temperature magnetic properties of geometrically frustrated Gd2Sn2O7and Gd2Ti2O7

2003 ◽  
Vol 15 (45) ◽  
pp. 7777-7787 ◽  
Author(s):  
P Bonville ◽  
J A Hodges ◽  
M Ocio ◽  
J P Sanchez ◽  
P Vulliet ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Geometrically Frustrated

scholarly journals Magnetic structure and low-temperature properties of geometrically frustrated SrNd2O4

2021 ◽  
Vol 103 (13) ◽  
Author(s):  
N. Qureshi ◽  
A. R. Wildes ◽  
C. Ritter ◽  
B. Fåk ◽  
S. X. M. Riberolles ◽  
...  
Keyword(s):  
Low Temperature ◽  
Magnetic Structure ◽  
Geometrically Frustrated

A Geometrically Frustrated Family of MIIMIIIF5(H2O)2 Mixed–Metal Fluorides with Complex Magnetic Interactions

2021 ◽  
Author(s):  
Navindra Keerthisinghe ◽  
Anna A. Berseneva ◽  
Vladislav V. Klepov ◽  
Gregory Morrison ◽  
Hans-Conrad zur Loye
Keyword(s):  
Magnetic Interactions ◽  
Mixed Metal ◽  
Geometrically Frustrated ◽  
Metal Fluorides
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