کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1504618 1510996 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mild hydrothermal synthesis, isomorphous substitution, crystal structure characterization and magnetic properties of BaMP2O7 (M = Mn, Cu)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Mild hydrothermal synthesis, isomorphous substitution, crystal structure characterization and magnetic properties of BaMP2O7 (M = Mn, Cu)
چکیده انگلیسی


• One step, mild hydrothermal synthesis of BaMP2O7 (M = Mn and/or Cu) metal phosphates.
• Isomorphous substitution and Rietveld refinement.
• Magnetic properties.

At mild hydrothermal conditions triclinic modifications of BaMP2O7 (M = Mn and/or Cu) have been succeeded. The method offers cheap, one step, impurity free and chemical flexible fabrication of family of metal phosphates that are potential low-dimensional quantum magnets. Partial isomorphous substitution of the Mn2+ by Cu2+ resulted into mixed-metal solid that has been structurally and magnetically characterized. Rietveld refinement study confirmed the structures and revealed the influence of transition metal substitution. The temperature-dependent magnetic measurements revealed that the system is paramagnetic in almost all temperature range and an apparent antiferromagnetic phase transition occurs around 5 K. Using the Curie–Weiss law, a Curie–Weiss temperature, θP = −11.0 K, and a Curie constant C = 3.39 emu K mol−1 was obtained. The small negative θP value and the χT behavior as a function of temperature reveal a weak antiferromagnetic interaction between the Cu2+/Mn2+magnetic centers.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Sciences - Volume 26, December 2013, Pages 59–64
نویسندگان
, , ,