ساخت دزیمتر نانوساختار CaZrO3 با افزودنی Eu3+ به‌روش سل-ژل احتراقی و مطالعه خواص ترمولومینسانس آن

نویسندگان

1 گروه فیزیک، دانشگاه پیام‌نور واحد تهران، تهران

2 گروه فیزیک، دانشگاه کاشان، کاشان، اصفهان

چکیده

در این پژوهش، نانوفسفر (%mol 5، 4، 3، 2، 1=x) Ca1-xZrO3:Eux به‌روش سل-ژل احتراقی با سوخت اسیدسیتریک در دمای پایین تولید شد. نتایج آنالیز پراش پرتو ایکس (XRD) حاکی از تشکیل فاز نمونه در دمای °C 350 با ساختار پروسکایت بود. هم‌چنین نتایج XRD نشان داد دمای بهینه جهت تشکیل نمونه تک‌فاز و بلوری نانوفسفر Eu3+:CaZrO3، °C 700 بود. برای مطالعه ساختار و تخمین اندازه نمونه‌های تولید شده از آنالیز پراش پرتو ایکس (XRD) استفاده شد. مورفولوژی نمونه‌ها با استفاده از میکروسکوپ الکترونی روبشی گسیل میدانی (FE-SEM) مورد بررسی قرار گرفت. هم‌چنین جهت بررسی آنالیز کمی میزان عناصر موجود از آنالیز تفکیک انرژی پرتو ایکس (EDAX) متصل به دستگاه SEM استفاده شد. مطالعه خصوصیات ترمولومینسانس (TL) نمونه‌های ساخته شده تحت پرتودهی UV در مدت زمان ثابت با تغییر غلظت ناخالصی یوروپیوم و هم‌چنین تغییر مدت زمان پرتودهی UV در غلظت ثابت برای نمونه Ca0.98Eu0.02ZrO3 انجام شد. نمونه Ca0.98Eu0.02ZrO3 تکرارپذیر است و محوشدگی گرمایی بسیار ناچیزی دارد.

کلیدواژه‌ها

عنوان مقاله [English]

Synthesis of CaZrO3 nanostructured dosimeter with Eu3+ additive by sol-gel combustion method and study of its thermoluminescence properties

نویسندگان [English]

  • leila karimi 1
  • marjaneh jafari fesharaki 1
  • mohammad reza jalali 1
  • ehsan sadeghi 2
1
2
چکیده [English]

In this study, nanophosphorus Ca1-xZrO3:Eux (x=1,2,3,4,5 mol%) was prepared by sol-gel combustion method with citric acid as fuel at low temperature. The results of X-ray diffraction (XRD) analysis indicated the formation of sample phase at 350 °C with perovskite structure. XRD results also showed that the optimum temperature for the formation of single phase and crystalline nanophosphours sample of CaZrO3:Eu3+ is 700 °C. Surface morphology of the samples was identified by field emission electron microscopy (FE-SEM). X-ray energy dispersive analysis (EDAX) was employed to evaluate the elemental concentration of the samples. Study of thermoluminescence characterization of the produced samples were performed under constant UV irradiation with change of Europium impurity concentration and change of UV irradiation time for the sample Ca0.98Eu0.02ZrO3. Other thermoluminescence features such as reproducibility and fading were also evaluated for Ca0.98Eu0.02ZrO3 sample.
 

کلیدواژه‌ها [English]

  • Dosimeter
  • Nanostructure
  • CaZrO3
  • Sol-gel combustion
  • Thermoluminescence

مراجع

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