中国物理B ›› 2015, Vol. 24 ›› Issue (5): 59101-059101.doi: 10.1088/1674-1056/24/5/059101

• GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS • 上一篇    下一篇

Dielectric behaviors at microwave frequencies and Mössbauer effects of chalcedony, agate, and zultanite

Levent Paralıa, İsrafil Şabikoğlub, Jiri Tucekc, Jiri Pechousekc, Petr Novakc, Jakub Navarikc   

  1. a Celal Bayar University, Departments of Electronics and Automation, Turgutlu, Manisa 45400, Turkey;
    b Celal Bayar University, Faculty of Arts and Sciences, Department of Physics Muradiye, Manisa 45140, Turkey;
    c Regional Centre of Advanced Technologies and Materials, Department of Experimental Physics, Faculty of Science, Palacky University, 17. listopadu 1192/12, 77 146 Olomouc, Czech Republic
  • 收稿日期:2014-08-07 修回日期:2014-10-18 出版日期:2015-05-05 发布日期:2015-05-05
  • 基金资助:
    Project Project LO1305 and Operational Program Education for Competitiveness-European Social Fund of the Ministry of Education, Youth and Sports of the Czech Republic (Grant No. CZ.1.07/2.3.00/20.0155), and the Internal Student Grant IGA of Palacky University in Olomouc, Czech Republic (Grant No. IGA PrF 2014017).

Dielectric behaviors at microwave frequencies and Mössbauer effects of chalcedony, agate, and zultanite

Levent Paralia, İsrafil Şabikoğlub, Jiri Tucekc, Jiri Pechousekc, Petr Novakc, Jakub Navarikc   

  1. a Celal Bayar University, Departments of Electronics and Automation, Turgutlu, Manisa 45400, Turkey;
    b Celal Bayar University, Faculty of Arts and Sciences, Department of Physics Muradiye, Manisa 45140, Turkey;
    c Regional Centre of Advanced Technologies and Materials, Department of Experimental Physics, Faculty of Science, Palacky University, 17. listopadu 1192/12, 77 146 Olomouc, Czech Republic
  • Received:2014-08-07 Revised:2014-10-18 Online:2015-05-05 Published:2015-05-05
  • Contact: Levent Paralı E-mail:levent.parali@cbu.edu.tr
  • About author:91.60.Mk; 78.20.Ci; 75.20.En; 91.25.F-
  • Supported by:
    Project Project LO1305 and Operational Program Education for Competitiveness-European Social Fund of the Ministry of Education, Youth and Sports of the Czech Republic (Grant No. CZ.1.07/2.3.00/20.0155), and the Internal Student Grant IGA of Palacky University in Olomouc, Czech Republic (Grant No. IGA PrF 2014017).

摘要: In this study, dielectric properties within 8–12 GHz microwave frequencies, inductively coupled plasma-atomic emission spectrometry, Fourier transform infrared spectrometry, synchronized two thermal analyses, and 57Fe Mössbauer spectroscopy analysis of chalcedony, agate, and zultanite samples from Turkey are presented. Agate and chalcedony show the same nine vibrational absorption peaks obtained unlike zultanite from FTIR spectra in the 350 cm-1 to 4000 cm-1 range, ε' values of chalcedony, agate and zultanite derived at 10.5 GHz were 4.67, 4.41, and 7.34, respectively, ε' and ε" values of the studied samples at the microwave frequencies are related to the percentage weight of their constituent parts in their chemical compositions. 57Fe Mössbauer spectroscopy results confirm the existence of iron-containing islands in the crystal structure of zultanite, agate, and chalcedony samples, equipped them with magnetic features typical for magnetic nanoparticles including superparamagnetism. The presence of iron-containing islands significantly affects the magnetic, dielectric, and optical properties of studied samples that are not observed for pure minerals without any foreign inclusions.

关键词: zultanite agate chalcedony, microwave dielectric properties, Mö, ssbauer effects

Abstract: In this study, dielectric properties within 8–12 GHz microwave frequencies, inductively coupled plasma-atomic emission spectrometry, Fourier transform infrared spectrometry, synchronized two thermal analyses, and 57Fe Mössbauer spectroscopy analysis of chalcedony, agate, and zultanite samples from Turkey are presented. Agate and chalcedony show the same nine vibrational absorption peaks obtained unlike zultanite from FTIR spectra in the 350 cm-1 to 4000 cm-1 range, ε' values of chalcedony, agate and zultanite derived at 10.5 GHz were 4.67, 4.41, and 7.34, respectively, ε' and ε" values of the studied samples at the microwave frequencies are related to the percentage weight of their constituent parts in their chemical compositions. 57Fe Mössbauer spectroscopy results confirm the existence of iron-containing islands in the crystal structure of zultanite, agate, and chalcedony samples, equipped them with magnetic features typical for magnetic nanoparticles including superparamagnetism. The presence of iron-containing islands significantly affects the magnetic, dielectric, and optical properties of studied samples that are not observed for pure minerals without any foreign inclusions.

Key words: zultanite agate chalcedony, microwave dielectric properties, Mössbauer effects

中图分类号:  (Optical properties)

  • 91.60.Mk
78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)) 75.20.En (Metals and alloys) 91.25.F- (Rock and mineral magnetism)