کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8160814 | 1525113 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic study of the low temperature anomalies in the underdoped PrBCO compound
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The low temperature anomalous magnetic properties of a non-superconducting PrBCO6+x compound in an underdoped oxygen state of concentration (x = 0.44) are characterized by paraprocess magnetic susceptibility ÏH(T) measurements carried out as a function of temperature T under different values of a DC magnetic field H up to 110Â kOe. The derivatives dÏH(T)/dT curves reveal a significant reduction with increasing H in the Néel temperature TN = 9Â K of the Pr antiferromagnetic (AFM) ordering for which the transition subsists at 100Â kOe. The small anomaly at T2 = 6-7Â K is confirmed at 20Â kOe and the previous spin reorientation attributed to this transition temperature seems to be suppressed above 60Â kOe. The well defined anomaly in the vicinity of the low-critical point Tcr = 4-5Â K which occurs simultaneously, is still present when the strength of H is increased up to 100Â kOe. Weak field induced phase transitions are observed between T2 and TN at a low transition-field (Ht<11Â kOe) in the differential magnetic susceptibility dMT(H)/dH as a function of H deduced from the isothermal magnetizations MT(H) with H up to 21Â kOe, whereas a weak ferromagnetic behavior of the Pr sublattice appears below Tcr. The magnetic field effects give rise to more evidence for the Pr-Cu(2) coupling with 'exchange-frustrated AFM' interactions and ascertain the main role of the Pr sublattice whereas the Cu(2) sublattice seems to be less efficient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 536, 1 May 2018, Pages 12-17
Journal: Physica B: Condensed Matter - Volume 536, 1 May 2018, Pages 12-17
نویسندگان
Mahieddine Lahoubi,