The structural role of manganese ions in some zinc phosphate glasses and glass ceramics

Păşcuţă, Petru; Borodi, Gheorghe; Jumate, Nicolaie; Vida–Simiti, Ioan; Dan, Viorel; Culea, E.

doi:10.1016/j.jallcom.2010.05.147

Cited by 85 publications

(29 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained samples were analyzed by means of X-ray diffraction. The patterns obtained are characteristic for vitreous systems in this concentration range (0 ≤ x ≤ 20 mol%) of MnO [40].…”

Section: Methodsmentioning

confidence: 70%

Thermal, structural and magnetic properties of some zinc phosphate glasses doped with manganese ions

Păşcuţă

Bosca

Borodi

et al. 2011

Journal of Alloys and Compounds

Self Cite

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 70%

Thermal, structural and magnetic properties of some zinc phosphate glasses doped with manganese ions

Păşcuţă

Bosca

Borodi

et al. 2011

Journal of Alloys and Compounds

Self Cite

View full text Add to dashboard Cite

“…Due to their lower melting and transition temperatures, ultraviolet transmission, high thermal expansion and optical characteristics, phosphate glasses are technologically and scientifically interesting materials. They have been the subject of numerous applications such as manufacturing of glass-polymer composites [1][2][3], glass to metal seals [2][3][4][5][6][7], optical waveguides [1,2,6], biomaterials [6][7][8], solid state laser sources [1-4, 6, 9, 10], conducting materials [7,8,11,12], amorphous semiconductors [9,12,13], optical fibers for communication devices [10], nuclear waste immobilization matrices [6,7], etc.…”

Section: Introductionmentioning

confidence: 99%

Standard Formation Enthalpy of Na2O–ZnO–P2O5 Series Glasses

2018

View full text Add to dashboard Cite

100 − x)NaPO 3 -xZnO (0 ≤ x ≤ 33 mol%) phosphate glasses have been prepared using the conventional melt quenching technique. Amorphous state was checked up by X-ray diffraction. Glasses have been investigated in detail by mean of differential scanning calorimetry, inductively coupled plasma. Incorporation of ZnO oxide increases the T g value and the thermal stability of samples. For this glass series, 31 P solid state magic angle spinning nuclear magnetic resonance (MAS-NMR) spectroscopy revealed the decrease of Q 2 tetrahedral sites and the increase of phosphate dimers (Q 1 ), when ZnO oxide is progressively introduced, suggesting the shortening of metaphosphate chains. Dissolution of glasses has been followed calorimetrically and showed a change in thermal signs resulting from the depolymerization of metaphosphate groups when ZnO oxide is added. A thermochemical cycle involving a number of dissolution and mixing processes have been carried out in order to get the standard enthalpy of formation of these glasses. Calculation of these quantities needs the standard enthalpy of formation of sodium trimetaphosphate. Formation enthalpy of glasses increases with the incorporation of ZnO oxide.

show abstract

“…Hence the violet color of the glasses is caused by the presence of Mn 3? ions with the 3d 4 4s 2 electron configuration in their structure, and the yellow tint results from the presence of Mn 2? ions with the 3d 5 4s 2 electron configuration [9]. Literature data report on the structural role of manganese ions in zinc phosphate [10] or fluorophosphates glasses [11]. Thermal characteristics of phosphate-silicate glasses modified by manganese ions are rarely found in the literature.…”

Section: Introductionmentioning

confidence: 99%

Thermal properties of MnO2 and SiO2 containing phosphate glasses

Szumera

Wacławska

Sułowska³

2015

J Therm Anal Calorim

View full text Add to dashboard Cite

Thermal properties of glasses from the P 2 O 5 -SiO 2 -K 2 O-MgO-CaO system modified by MnO 2 addition was studied by DSC, XRD and FTIR methods. It has been found that the replacement of MgO and CaO modifiers by MnO 2 in the structural network of phosphate glasses results in decrease in the glass transition temperature (T g ) and thermal stability parameter (DT). The identified crystallization products proved to be diversified, including different type of polyphosphates and silicates. It was determined that the type of the crystallizing phosphate phases is consistent with the classification of phosphate glasses, based on the O/P ratio. During the crystallization in higher temperature ranges and with the content of MnO 2 over 25 mol%, a change of crystallization products was noted, including the transition of the diopside type silicate (CaMgSi 2 O 6 ) into the akermanite type silicate (Ca 2-MgSi 2 O 7 ). Simultaneously, the nature of transitions taking place during heating of the analyzed glasses was explained on the basis of crystallochemical factors (strengths of bonds) and chemical affinity of the glass components (DG of formation).

show abstract

The structural role of manganese ions in some zinc phosphate glasses and glass ceramics

Cited by 85 publications

References 28 publications

Thermal, structural and magnetic properties of some zinc phosphate glasses doped with manganese ions

Thermal, structural and magnetic properties of some zinc phosphate glasses doped with manganese ions

Standard Formation Enthalpy of Na2O–ZnO–P2O5 Series Glasses

Thermal properties of MnO2 and SiO2 containing phosphate glasses

Contact Info

Product

Resources

About