کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1814241 1025646 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic phase transitions in Nd7Rh3 single crystal
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Magnetic phase transitions in Nd7Rh3 single crystal
چکیده انگلیسی

Magnetic phase transitions in rare earth intermetallic compound Nd7Rh3 have been investigated using a single crystal. Measurement results of magnetization, magnetic susceptibility, specific heat, and electrical resistivity reveal that Nd7Rh3 has two magnetic phase transitions at TN=34 K, Tt2=9.1 K and a change of the magnetic feature at Tt1=6.8 K in the absence of an external magnetic field. Antiferromagnetic orderings exist in all the three magnetic states; a large magnetic anisotropy between the c-axis and the c-plane is observed. In the magnetic phase below Tt2, an irreversible field-induced magnetic phase transition takes place in the c-plane; after removing external magnetic field, a coexistence state of ferro- and antiferromagnetic ordering or a ferrimagnetic state having a remanent magnetization MR is stabilized. The MR decays to a certain value for several hours after the first process; a magnetic field cooling effect was also observed in the c-plane below Tt2. In the antiferromagentic state above Tt2, the irreversibility disappears and an ordinary antiferromagnetic state takes place. As the origin of this phenomenon, a kind of martensitic structural transition that is observed in Gd5Ge4 can be considered.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 403, Issue 18, 1 September 2008, Pages 3248–3254
نویسندگان
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