کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5490540 | 1524793 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The first study of antiferromagnetic eosphorite-childrenite series (Mn1âxFex)AlP(OH)2H2O (x=0.5)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study presents for the first time the antiferromagnetic structure of the eosphorite-childrenite series (Mn1-xFex)AlPO4(OH)2H2O (x=0.5), based on neutron single crystal diffraction at 3Â K in combination with group theoretical representation analysis. The new magnetic structure is described in the magnetic space group PCmnb, maintaining the atomistic unit cell size (aÃbÃc) with a ~6.9Â Ã
, b ~10.4Â Ã
, c ~13.4Â Ã
. Mn-rich and Fe-rich zones within solid solution crystals are expanded up to several hundred micrometers, as seen in electron microprobe and polarisation microscopy. Magnetic susceptibility and specific heat measurements on two different eosphorite-childrenite crystals show the magnetic transition temperature between 6.5 K and 6.8 K as the Mn2+/Fe2+ ratio varies over single compositional zones. Below the Néel temperature, a magnetic field between 1.5 T and 2 T parallel to the a-axis causes a 180° spin-flip, reaching the saturation (5.25 μB pfu) toward high magnetic fields.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 428, 15 April 2017, Pages 17-27
Journal: Journal of Magnetism and Magnetic Materials - Volume 428, 15 April 2017, Pages 17-27
نویسندگان
D. Behal, B. Röska, S.-H. Park, B. Pedersen, G. Benka, Ch. Pfleiderer, Y. Wakabayashi, T. Kimura,