. . . "This article presents preparation and characterization of zinc, copper and cadmium chromites nanocrystals embedded in a silica matrix. The ZnCr2O4/SiO2, CuCr2O4/SiO2 and CdCr2O4/SiO2 samples were prepared by a conventional sol-gel method using HNO3 as an acid catalyst, formamide as a modifier, methanol as a solvent and TEOS. Final heat treatment of the nanocomposites was carried out at temperatures in the range of 900 - 1100 degrees C. The resulting samples were characterized by X-ray diffraction, High Resolution Transmission Electron Microscopy, and magnetic measurements."@en . "Ni\u017E\u0148ansk\u00FD, D." . . . . "Vejpravov\u00E1, J." . "2010-11-14+01:00"^^ . "Magnetic-structure; Chlorine gas; Spinels; Sensors; Ceramic materials"@en . "RIV/61388980:_____/11:00440072!RIV15-GA0-61388980" . "P(GAP108/10/1250)" . "Osaka" . . . "ACr(2)O(4)/SiO2 (A = Zn, Cu, Cd) nanocomposites, their preparation and physical properties" . "IOP Publishing" . "Kitazawa, H." . . . . "[CDD5FECBAC21]" . "2"^^ . "RIV/61388980:_____/11:00440072" . . "ACr(2)O(4)/SiO2 (A = Zn, Cu, Cd) nanocomposites, their preparation and physical properties"@en . . "000299436300024" . "Holec, Petr" . "N\u011Bmec, I." . . "6"^^ . "Plocek, Ji\u0159\u00ED" . "10.1088/1757-899X/18/3/032024" . "1757-8981" . . "184479" . . "ACr(2)O(4)/SiO2 (A = Zn, Cu, Cd) nanocomposites, their preparation and physical properties" . . "ACr(2)O(4)/SiO2 (A = Zn, Cu, Cd) nanocomposites, their preparation and physical properties"@en . "This article presents preparation and characterization of zinc, copper and cadmium chromites nanocrystals embedded in a silica matrix. The ZnCr2O4/SiO2, CuCr2O4/SiO2 and CdCr2O4/SiO2 samples were prepared by a conventional sol-gel method using HNO3 as an acid catalyst, formamide as a modifier, methanol as a solvent and TEOS. Final heat treatment of the nanocomposites was carried out at temperatures in the range of 900 - 1100 degrees C. The resulting samples were characterized by X-ray diffraction, High Resolution Transmission Electron Microscopy, and magnetic measurements." . . "Bristol" . . "4"^^ . "IOP conference series: Materials science and engineering" .