اثر برهم‌کنش تبادلی و ناهمسانگردی یونی منفرد بر حلقه‌ پسماند آلیاژهای سه‌تایی فری‌مغناطیس ABxC1-x با ساختار آمورف

نوع مقاله: مقاله پژوهشی کامل

نویسندگان

1 دانشگاه یاسوج

2 عضو هیات علمی

چکیده

خصوصیات مغناطیسی آلیاژهای سه‌تایی فری‌مغناطیس آمورف با ساختار ABxC1-x با استفاده از شبیه‌سازی مونت کارلو در چارچوب مدل آیزینگ و مدل برهم‌کنش تبادلی RKKY بررسی شده است. برای این منظور اثر برهم‌کنش تبادلی و ناهمسانگردی یونی منفرد بر حلقه پسماند مطالعه شده است. شبیه‌سازی‌ها نشان می‌دهند که منحنی پسماند با تغییر برهم‌کنش تبادلی و ناهمسانگردی یونی تغییر شکل می‌دهد. مشاهده می‌شود که به ازای برخی از پارامترها، منحنی‌های پلکانی و حلقه-های سه‌تایی پسماند ایجاد شده است. علاوه بر این، اثر غلظت بر رفتار حرارتی مغناطش نیز مطالعه شده است. نتایج نشان می‌دهند که در برخی از غلظت‌ها، دمای بحرانی جبران کمتر از دمای گذار می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Effects of exchange interaction and single ion-anisotropy on the Hysteresis loop of ferrimagnetic ternary alloys ABxC1-x with amorphous structures

نویسندگان [English]

  • Hamze Nakhaee Motlagh 1
  • Ghasem Rezaei 2
چکیده [English]

Based on the Monte Carlo simulation and the RKKY model, magnetic properties of mixed spin (3/2,1,1/2) ferrimagnetic ternary alloys of the type ABxC1-x are investigated. To do this, the influence of exchange energy and single ion-anisotropy on the magnetic hysteresis loop and magnetic susceptibility of ternary alloys with amorphous structures are examined. Our simulations reveal that the changes in exchange energy and single ion-anisotropy have a great influence on the magnetic hysteresis loop. It is seen that for some values of these parameters the stepwise curves and the triple hysteresis loop are appeared. Furthermore, the influence of concentration on the behaviour of thermal magnetization is studied. Our results indicate that for some values of concentration, the compensation temperature becomes less than the phase temperature.

کلیدواژه‌ها [English]

  • Ternary alloys
  • Ferrimagnetism
  • Monte Carlo simulation
  • RKKY model
  • Exchange energy
  • Single ion-anisotropy
  • Hysteresis loop

 

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