بررسی ویژگی‌های مغناطیسی خاک اخرا جزیره هرمز

نوع مقاله : مقاله پژوهشی

نویسنده

گروه فیزیک، دانشکده علوم، دانشگاه سیستان و بلوچستان، زاهدان، ایران

چکیده

جزیره هرمز در جنوب ایران و در ورودی خلیج فارس با مساحتی حدود چهل و یک کیلومتر مربع در هجده کیلومتری بندرعباس قرار دارد. معدن خاک اخرای جزیره هرمز در ۹ کیلومتری منطقه مسکونی هرمز در جاده کرانه واقع است. در این پژوهش، چند گرم از این خاک به عنوان نمونه برداشت و مواد موجود در آن و ویژگی­های مغناطیسی آن با آزمون‌های پراش پرتوی ایکس(XRD) ، طیف‌سنجی تبدیل فوریه فروسرخ (FTIR)، میکروسکوپی نیروی اتمی (AFM)، میکروسکوپ الکترونی روبشی گسیل میدان(FESEM) ، طیف سنجی پراکندگی انرژی پرتوی ایکس (EDS) و مغناطیس‌سنجی نمونه ارتعاشی (VSM) بررسی شدند. پراش پرتوی ایکس نمونه خاک اخرا جزیره هرمز اکسیدهای فلزی متفاوتی چون هماتیت، مگنتیت و همچنین کوارتز به عنوان اکسیدهای غالب نمونه شناسایی کرد. تصاویر میکروسکوپ نیروی اتمی از نمونه پودری اندازه ذرات را کمتر از ۸/۱۵ نانومتر نشان داد که با تصاویر میکروسکوپ الکترونی روبشی گسیل میدان همخوانی خوبی دارد. با مشخصه‌یابی مغناطیسی نمونه بر پایه حلقه پسماند، وادارندگی1458.0 Oe ، مغناطش اشباع 0.27 emu/g و مغناطش باقیمانده 90. 360 10-3 emu/g به دست آمد: بر این اساس، نمونه مورد بررسی ماده‌ای فرومغناطیس است.

کلیدواژه‌ها

عنوان مقاله [English]

Investigating the magnetic properties of ocher soil in Hormoz Island

نویسنده [English]

  • Abdol Mahmood DAVARPANAH
Department of Physics, University of Sistan and Baluchestan, Zahedan, Iran
چکیده [English]

Hormoz Island is located in the south of Iran and at the entrance of the Persian Gulf, with an area of about forty-one square kilometers, eighteen kilometers from Bandar Abbas. Okhra soil mine of Hormoz island is located about 9 km far from the residential area of Hormoz on Karane road. Due to the lack of studies related to the magnetic properties of the ocher soil of Hormoz Island, in this article, a few grams of this soil was collected as a sample and analyzied in order to identify the materials present in the ocher soil of Hormoz Island and the magnetic properties were determined, which is of great importance. Data obtained from X-ray diffraction (XRD), Fourier transform infrared (FTIR), atomic force microscopy (AFM), field emission scanning electron microscopy (FESEM), X-ray energy dispersive spectroscopy (EDS) and vibrating sample magnetometry (VSM) have been investigated. X-ray diffraction study of the ocher soil sample of Hormoz Island showed different oxides such as hematite, magnetite and quartz as the dominant oxides in the sample. According to the pulverization of the sample, the atomic force microscope images showed that the particle size is below 15.8 nm, which is in good agreement with the field emission scanning electron microscope images with the given scale. Magnetic characterization of the sample using the hysteresis loop, coercivity 1458.0 Oe, saturation magnetization 0.26948 emu/g and residual magnetization 90.360×10-3 emu/g were obtained. According to the data obtained from the hysteresis loop of the sample, the investigated item shows a ferromagnetic material from the magnetic point of view.

کلیدواژه‌ها [English]

  • Hormoz Island
  • ocher soil
  • red soil of Hormoz
  • red mud of Hormoz
  • magnetic properties
  • Iron Oxide

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مجله بلورشناسی و کانی شناسی ایران
دوره 33، شماره 1 - شماره پیاپی 97
فروردین 1404
صفحه 181-192

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سابقه مقاله

  • تاریخ دریافت: 17 مرداد 1403
  • تاریخ بازنگری: 21 شهریور 1403
  • تاریخ پذیرش: 30 مهر 1403

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