کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8155380 | 1524820 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic and structural properties of MnRh thin Films
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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
A systematic study of magnetic and structural properties of MnRh thin films fabricated by sputter-deposition onto silica glass has been conducted. The MnRh thin films are found to be of the CsCl-type structure, and ferromagnetic at room temperature. The MnRh thin film undergoes the magnetic phase transition between antiferromagnetic and ferromagnetic states at a temperature around 175Â K and 310Â K during the cooling and heating process, respectively. The temperature dependence of the magnetization shows a thermal hysteresis of about 120Â K. An exchange bias field of about 450Â Oe at 5Â K was observed with the coercivity of 900Â Oe and unidirectional anisotropy constant of about 0.45Â erg/cm2. The magnetic field dependence of M-T shows that the transition temperature of about 230Â K remains unchanged with increasing field during the temperature variation process. A detailed STEM-EDS analysis indicates a non-uniform compositional distribution of Mn and Rh with an average composition of Mn58Rh42Â at%. A high resolution STEM-HAADF analysis reveals the compositional variations within the CsCl-type MnRh grains. It is proposed that the origin of exchange bias effect is resulted from the exchange coupling between the ferromagnetic region with Mn-rich and the antiferromagnetic region with nearly the equiatomic composition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 401, 1 March 2016, Pages 144-149
Journal: Journal of Magnetism and Magnetic Materials - Volume 401, 1 March 2016, Pages 144-149
نویسندگان
Anurag Chaturvedi, Hossein Sepehri-Amin, Tadakatsu Ohkubo, Kazuhiro Hono, Takao Suzuki,