Study of the Structure and Some Physical Properties of Sodium-Boro-Phosphate Glasses Containing Antimony and Iron Oxides

Karam Abdel-aati ALI

Makale detayları

Study of the Structure and Some Physical Properties of Sodium-Boro-Phosphate Glasses Containing Antimony and Iron Oxides

Yazarlar:

Karam Abdel-aati ALI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2003 Vol.27 Issue 3, pp.225-233

Belge Tipi:

Makale

Yayın Tarihi:

2/2003

Belge Dili:

Türkçe

Document ID (Org No.):

2000761966

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Anahtar kelimeler:

Özet:

 

Boro-phosphate glasses containing transition metal oxides  are of special interest.  Hence, some sodium-Boro-phosphate glasses  containing iron and antimony oxides were prepared and investigated.  The structural investigation indicated the presence of different borate groups as well as tetragonal phosphate units. Most of the iron cations were found to occupy the low spin Fe3 + in the tetrahedral coordination state. It was observed that some antimony act as network former cations and some others act as bridges between any two adjacent polyhedra. At high antimony oxide content, the formation of some Sb-Fe bonds was also detected.  The magnetic susceptibility measurements showed a maximum value when  antimony oxide reached 15 mol %, but decreased with higher  concentration.  Between 20 mol % and 30 mol %, the magnetic  susceptibility exhibited approximately stable value, indicating that  at 15 mol % of antimony oxide content, most iron cations occupy the  tetrahedral coordination state.  The observed decrease in the magnetic  susceptibility at higher concentrations may be due to the formation of  some Sb-Fe bonds, which act to pair the iron d-electrons, in addition  to the increase of Sb2O3 content which has low magnetic  properties.  The obtained density and the calculated molar volume values showed   approximately linear increase. The increase of the density can be attributed to the differences in the molecular weights of both boron and antimony oxides, while the increase of the molar volume can be ascribed to the radius and the volume effects of the increasing antimony cations.

 

Boro-phosphate glasses containing transition metal oxides  are of special interest.  Hence, some sodium-Boro-phosphate glasses  containing iron and antimony oxides were prepared and investigated.  The structural investigation indicated the presence of different borate groups as well as tetragonal phosphate units. Most of the iron cations were found to occupy the low spin Fe3 + in the tetrahedral coordination state. It was observed that some antimony act as network former cations and some others act as bridges between any two adjacent polyhedra. At high antimony oxide content, the formation of some Sb-Fe bonds was also detected.  The magnetic susceptibility measurements showed a maximum value when  antimony oxide reached 15 mol %, but decreased with higher  concentration.  Between 20 mol % and 30 mol %, the magnetic  susceptibility exhibited approximately stable value, indicating that  at 15 mol % of antimony oxide content, most iron cations occupy the  tetrahedral coordination state.  The observed decrease in the magnetic  susceptibility at higher concentrations may be due to the formation of  some Sb-Fe bonds, which act to pair the iron d-electrons, in addition  to the increase of Sb2O3 content which has low magnetic  properties.  The obtained density and the calculated molar volume values showed   approximately linear increase. The increase of the density can be attributed to the differences in the molecular weights of both boron and antimony oxides, while the increase of the molar volume can be ascribed to the radius and the volume effects of the increasing antimony cations.

Makale detayları

Study of the Structure and Some Physical Properties of Sodium-Boro-Phosphate Glasses Containing Antimony and Iron Oxides

Yazarlar:

Karam Abdel-aati ALI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2003 Vol.27 Issue 3, pp.225-233

Belge Tipi:

Makale

Yayın Tarihi:

2/2003

Belge Dili:

Türkçe

Document ID (Org No.):

2000761966

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101

Glass structure

Physical properties of glass

Glass containing antimony and iron oxides

Sayı

Makale detayları

Study of the Structure and Some Physical Properties of Sodium-Boro-Phosphate Glasses Containing Antimony and Iron Oxides

Yazarlar: Karam Abdel-aati ALI

Yayıncı: TUBITAK

Dergi: Turkish Journal of Physics 2003 Vol.27 Issue 3, pp.225-233

Belge Tipi: Makale

Yayın Tarihi: 2/2003

Belge Dili: Türkçe

Document ID (Org No.): 2000761966

Sıklık: İki Aylık

eISSN: 1303-6122

pISSN: 1300-0101

Glass structure

Physical properties of glass

Glass containing antimony and iron oxides

Sayı

Yazarlar:

Karam Abdel-aati ALI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Physics 2003 Vol.27 Issue 3, pp.225-233

Belge Tipi:

Makale

Yayın Tarihi:

2/2003

Belge Dili:

Türkçe

Document ID (Org No.):

2000761966

Sıklık:

İki Aylık

eISSN:

1303-6122

pISSN:

1300-0101