Synthetic, structural and magnetic studies on chromium orthoborate

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Oeztuerk O. F., Zuemreoglu-Karan B., Can M. M., O Ş.

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, cilt.634, ss.1127-1132, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 634
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1002/zaac.200700588
  • Dergi Adı: ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1127-1132
  • Anahtar Kelimeler: chromium, chromium borate, high temperature synthesis, crystal structures, magnetic properties, CRYSTAL-CHEMISTRY, NANOPARTICLES, CRBO3, VBO3, BORATE, CR2O3
  • İstanbul Üniversitesi Adresli: Hayır

Özet

Effects of various Cr and B sources and preheating conditions on the high temperature synthesis of chromium orthoborate were studied. Precursors were mixed, ground, heated at 1000 degrees C and reground. The obtained products were checked by XRD, vibrational and electronic spectroscopy, SEM and density measurements. Some characteristic properties were redetermined and compared with the earlier data. The reaction between hydrated Cr(III) sulfate and boric acid (or hydrated ammoniurn borate salts) was found to be the most effective in providing nanosize crystallites of calcite-type CrBO3 with 99 % purity. Finally, temperature dependent magnetic properties were investigated and paramagnetic to antiferromagnetic transition was observed at 12 K.

Effects of various Cr and B sources and preheating conditions on the high temperature synthesis of chromium orthoborate were studied. Precursors were mixed, ground, heated at 1000 °C and reground. The obtained products were checked by XRD, vibrational and electronic spectroscopy, SEM and density measurements. Some characteristic properties were redetermined and compared with the earlier data. The reaction between hydrated Cr(III) sulfate and boric acid (or hydrated ammonium borate salts) was found to be the most effective in providing nanosize crystallites of calcite-type CrBO3 with 99 % purity. Finally, temperature dependent magnetic properties were investigated and paramagnetic to antiferromagnetic transition was observed at 12 K.