کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5490138 | 1524777 | 2017 | 5 صفحه PDF | دانلود رایگان |
- Competing antiferro and ferromagnetic interactions in Gd3Co.
- Magnetic field-induced antiferromagnetic to ferromagnetic transformation via a spin-flop over region.
- Field-induced putative tricritical point where quasi-first order transition ends and second order phase transition sets in.
- Magnetic field-temperature phase diagram showing possible field-induced magnetic phase transitions in Gd3Co.
Magnetic nature of Gd3Co is investigated using detailed measurements of temperature and field dependent magnetization. The antiferromagnetic phase is field-instable due to prevailing ferromagnetic exchange correlations above Néel temperature TNâ¼130K. Below TN, with gradually increasing magnetic fields, the compound undergoes a quasi-first order phase transition from AFM to spin-flop over region and eventually acquires ferromagnetic phase in higher fields. Further the point at which the quasi-first order transition ends and second order transition sets in is the tricritical point, TTCPâ¼125.6K, HTCPâ¼4.4kOe.
Journal: Journal of Magnetism and Magnetic Materials - Volume 444, 15 December 2017, Pages 439-443