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@ARTICLE{Pradheesh:171709,
author = {Pradheesh, R. and Xiao, Yinguo and Cherian, Dona and
Elizabeth, Suja and Hansen, Thomas and Chatterji, Tapan and
Brückel, Th. and Nair, Harikrishnan},
title = {{M}agnetization-steps in {Y}$_{2}${C}o{M}n{O}$_{6}$ double
perovskite: {T}he role of antisite disorder},
journal = {Journal of applied physics},
volume = {116},
number = {12},
issn = {1089-7550},
address = {Melville, NY},
publisher = {American Inst. of Physics},
reportid = {FZJ-2014-05278},
pages = {123907},
year = {2014},
abstract = {Antisite disorder is observed to have significant impact on
the magnetic properties of the double perovskite Y2CoMnO6
which has been recently identified as a multiferroic. A
paramagnetic-ferromagnetic phase transition occurs in this
material at Tc ≈ 75 K. At 2 K, it displays a strong
ferromagnetic hysteresis with a significant coercive field
of Hc ≈ 15 kOe. Sharp steps are observed in the hysteresis
curves recorded below 8 K. In the temperature range
2 K ≤ T ≤ 5 K, the hysteresis loops are
anomalous as the virgin curve lies outside the main loop.
The field-cooling conditions as well as the rate of
field-sweep are found to influence the steps. Quantitative
analysis of the neutron diffraction data shows that at room
temperature, Y2CoMnO6 consists of $62\%$ of monoclinic P21/n
with nearly $70\%$ antisite disorder and $38\%$ Pnma. The
bond valence sums indicate the presence of other valence
states for Co and Mn which arise from disorder. We explain
the origin of steps by using a model for pinning of
magnetization at the antiphase boundaries created by
antisite disorder. The steps in magnetization closely
resemble the martensitic transformations found in
intermetallics and display first-order characteristics as
revealed in the Arrott's plots.},
cin = {JCNS-2 / PGI-4 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {422 - Spin-based and quantum information (POF2-422) / 424 -
Exploratory materials and phenomena (POF2-424) / 542 -
Neutrons (POF2-542) / 544 - In-house Research with PNI
(POF2-544) / 54G - JCNS (POF2-54G24)},
pid = {G:(DE-HGF)POF2-422 / G:(DE-HGF)POF2-424 /
G:(DE-HGF)POF2-542 / G:(DE-HGF)POF2-544 /
G:(DE-HGF)POF2-54G24},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000342840000048},
doi = {10.1063/1.4896399},
url = {https://juser.fz-juelich.de/record/171709},
}