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000016639 0247_ $$2DOI$$a10.1016/j.jssc.2011.06.031
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000016639 084__ $$2WoS$$aChemistry, Inorganic & Nuclear
000016639 084__ $$2WoS$$aChemistry, Physical
000016639 1001_ $$0P:(DE-HGF)0$$aBurghaus, J.$$b0
000016639 245__ $$aLocal ordering and magnetism in Ga0.9Fe3.1N
000016639 260__ $$aOrlando, Fla.$$bAcademic Press$$c2011
000016639 300__ $$a2315 - 2321
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000016639 440_0 $$08041$$aJournal of Solid State Chemistry$$v184$$x0022-4596$$y9
000016639 500__ $$aThe FRM II is acknowledged for providing neutron beamtime on PGAA, and Lea Canella is acknowledged for assistance during the data acquisition. RH acknowledges support from the Helmholtz-University Young Investigator Group "Lattice Dynamics in Emerging Functional Materials". We also thank DFG for having funded this study.
000016639 520__ $$aPrior investigations of the ternary nitride series Ga1-xFe3+xN (0 <= x <= 1) have indicated a transition from ferromagnetic gamma'-Fe4N to antiferromagnetic "GaFe3N". The ternary nitride "GaFe3N" has been magnetically and spectroscopically reinvestigated in order to explore the weakening of the ferromagnetic interactions through the gradual incorporation of gallium into gamma'-Fe4N. A hysteretic loop at RI reveals the presence of a minority phase of only 0.1-0.2 at%, in accord with the sound two-step synthesis. The composition of the gallium-richest phase "GaFe3N" was clarified by Prompt Gamma-ray Activation Analysis and leads to the berthollide formula Ga0.91(1)Fe3.09(10)N1.05(7). Magnetic measurements indicate a transition around 8 K, further supported by Mossbauer spectral data. The weakening of the ferromagnetic coupling through an increasing gallium concentration is explained by a simple Stoner argument. In Ga0.9Fe3.1N, the presence of iron on the gallium site affects the magnetism by the formation of 13-atom iron clusters. (C) 2011 Elsevier Inc. All rights reserved.
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000016639 65320 $$2Author$$aNitride
000016639 65320 $$2Author$$aMagnetism
000016639 65320 $$2Author$$aChemical synthesis
000016639 65320 $$2Author$$aMossbauer spectroscopy
000016639 65320 $$2Author$$aStoner criterion
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000016639 7001_ $$0P:(DE-HGF)0$$aSougrati, M. T.$$b1
000016639 7001_ $$0P:(DE-Juel1)VDB73735$$aMöchel, A.$$b2$$uFZJ
000016639 7001_ $$0P:(DE-HGF)0$$aHouben, A.$$b3
000016639 7001_ $$0P:(DE-Juel1)130706$$aHermann, R.$$b4$$uFZJ
000016639 7001_ $$0P:(DE-HGF)0$$aDronskowski, R.$$b5
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