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000824611 037__ $$aFZJ-2016-07174
000824611 1001_ $$0P:(DE-Juel1)151336$$aJin, Wentao$$b0$$eCorresponding author$$ufzj
000824611 1112_ $$aJoint JCNS-Workshop and Flipper 2016 “Modern Trends in Neutron Scattering from Magnetic Systems and Single-crystal Diffraction with Polarized Neutrons”$$cTutzing$$d2016-10-03 - 2016-10-07$$wGermany
000824611 245__ $$aMagnetism in Eu(Fe1-xIrx)2As2 iron pnictides studied by complementary scattering methods
000824611 260__ $$c2016
000824611 3367_ $$033$$2EndNote$$aConference Paper
000824611 3367_ $$2DataCite$$aOther
000824611 3367_ $$2BibTeX$$aINPROCEEDINGS
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000824611 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1483630147_4019$$xInvited
000824611 520__ $$aAbstract: Doped EuFe2As2 is a unique representative of the 122 type family of iron based superconductors due to the two magnetic sublattices and the strong coupling between spin-, lattice- and charge degrees of freedom. In present work, the magnetic ground states of the localized Eu2+ spins in underdoped, nonsuperconducting Eu(Fe0.94Ir0.06)2As2 and optimally doped, superconducting Eu(Fe0.88Ir0.12)2As2 (TSC = 22 K) were investigated by polarized and unpolarized single-crystal neutron diffraction measurements, respectively. The Eu2+ spins in the underdoped (x = 0.06) crystal were found to order within the ab plane in the A-type antiferromagnetic (AFM) structure. However, the Eu2+ spins in the optimally doped (x = 0.12) crystal were found to be ferromagnetically aligned along the c direction with an ordered moment of 7.0(1) μB at 2.5 K, coexisting with the bulk superconductivity. In addition, compared with the parent compound EuFe2As2, which shows the AFM order of the Fe2+ moments below TN,Fe = 190 K, TN,Fe was significantly suppressed to 85(2) K and completely suppressed, by 6% and 12% Ir doping, respectively. Most strikingly, the x-ray resonant magnetic scattering measurements on the underdoped (x = 0.06) crystal revealed the magnetic polarization of the 5d Ir dopant atoms and suggested a possible interplay between the localized Eu2+ moments and the conduction d electrons on the FeAs layers.
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000824611 65027 $$0V:(DE-MLZ)SciArea-120$$2V:(DE-HGF)$$aCondensed Matter Physics$$x0
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000824611 65017 $$0V:(DE-MLZ)GC-2004-2016$$2V:(DE-HGF)$$aBasic research$$x0
000824611 693__ $$0EXP:(DE-MLZ)HEIDI-20140101$$1EXP:(DE-MLZ)FRMII-20140101$$5EXP:(DE-MLZ)HEIDI-20140101$$6EXP:(DE-MLZ)SR9b-20140101$$aForschungs-Neutronenquelle Heinz Maier-Leibnitz $$eHEiDi: Single crystal diffractometer on hot source$$fSR9b$$x0
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000824611 7001_ $$0P:(DE-Juel1)131047$$aXiao, Yinguo$$b1$$ufzj
000824611 7001_ $$0P:(DE-Juel1)130991$$aSu, Yixi$$b2$$ufzj
000824611 7001_ $$0P:(DE-Juel1)140435$$aNandi, Shibabrata$$b3
000824611 7001_ $$0P:(DE-HGF)0$$aLi, W.$$b4
000824611 7001_ $$0P:(DE-HGF)0$$aJiao, W. H.$$b5
000824611 7001_ $$0P:(DE-Juel1)164297$$aMeven, Martin$$b6$$ufzj
000824611 7001_ $$0P:(DE-Juel1)164291$$aSazonov, Andrew$$b7$$ufzj
000824611 7001_ $$0P:(DE-HGF)0$$aNisbet, G.$$b8
000824611 7001_ $$0P:(DE-Juel1)157770$$aDemirdis, Sultan$$b9$$ufzj
000824611 7001_ $$0P:(DE-Juel1)159565$$aFeng, Erxi$$b10$$ufzj
000824611 7001_ $$0P:(DE-HGF)0$$aChen, Y.$$b11
000824611 7001_ $$0P:(DE-HGF)0$$aTing, C. S.$$b12
000824611 7001_ $$0P:(DE-HGF)0$$aCao, G. H.$$b13
000824611 7001_ $$0P:(DE-Juel1)130572$$aBrückel, Thomas$$b14$$ufzj
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000824611 9131_ $$0G:(DE-HGF)POF3-6G15$$1G:(DE-HGF)POF3-6G0$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF3-6G15$$aDE-HGF$$bForschungsbereich Materie$$lGroßgeräte: Materie$$vFRM II / MLZ$$x2
000824611 9131_ $$0G:(DE-HGF)POF3-623$$1G:(DE-HGF)POF3-620$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF3-6G4$$aDE-HGF$$bForschungsbereich Materie$$lVon Materie zu Materialien und Leben$$vFacility topic: Neutrons for Research on Condensed Matter$$x3
000824611 9141_ $$y2016
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