کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1799343 1524843 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic and thermodynamic properties of the lightly electron-doped manganite compound (Ca,Sr)Mn0.95Sb0.05O3
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Magnetic and thermodynamic properties of the lightly electron-doped manganite compound (Ca,Sr)Mn0.95Sb0.05O3
چکیده انگلیسی
We report on the dc magnetization and ac magnetic susceptibility of the lightly electron-doped manganite compound (Ca1−x2+Srx2+)Mn0.94+Mn0.053+Sb0.055+O32− (x=0.0, 0.05, 0.10, 0.15, 0.16, 0.17, and 0.2) with a fixed carrier content, to examine the effect of chemical pressure on magnetization reversal of this system. In a weak magnetic-field-cooled measurement, diamagnetic magnetization is observed for x≤15%, which changes to positive values for x>15%. We present a magnetic phase diagram as a function of Sr concentration in several magnetic fields. The ac magnetic susceptibility measurement indicates the existence of magnetic frustration for the Sr substituted samples exhibiting diamagnetic behavior. To better understand the thermodynamic properties of this system, we have measured the specific heat as a function of temperature over a field cooling of 100 Oe. Our data show no anomalies associated with the temperature-dependent magnetization reversal, indicating the absence of long-range magnetic ordering.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 378, 15 March 2015, Pages 451-456
نویسندگان
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