The substitution effects on electronic structure of Ba<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e193" altimg="si44.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>MgWO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e201" altimg="si45.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:msub></mml:math> double perovskite oxide

Miniajluk-Gaweł

et al. 2021

Sci Rep

Self Cite

The suitability of Ba2MgWO6 (BMW) double perovskite doped with Eu3+ for the construction of an optical thermometer was tested. It has been shown that by controlling the conditions of BMW synthesis, the sensitivity of the optical thermometer and the useful range of its work can be changed. Pure BMW and doped with Eu3+ samples were prepared using the mechano-chemical and co-precipitation methods. Both the absolute sensitivity and the relative sensitivity in relation to the synthesis route were estimated. The findings proved that the relative sensitivity can be modulated from 1.17%K−1 at 248 K, to 1.5%K−1 at 120 K for the co-precipitation and the mechanochemical samples, respectively. These spectacular results confirm the applicability of the Ba2MgWO6: Eu3+ for the novel luminescent sensors in high-precision temperature detection devices. The density-functional theory was applied to elucidate the origin of the host emission.

Section: Resultssupporting

confidence: 51%

On how the mechanochemical and co-precipitation synthesis method changes the sensitivity and operating range of the Ba2Mg1-xEuxWO6 optical thermometer

Miniajluk-Gaweł

et al. 2021

Sci Rep

Self Cite

“…The p-d bandgap (E g ) of 2.80 eV, calculated here within the LDA approach, is lower than the experimental one (3.45 eV). It is worth recalling that underestimated E g values were also reported for this system in the recent DFT+U studies 25,26 , whereas the hybrid DFT calculations yielded generally overestimated Eg for double perovskite oxides 27 . However, the calculation of the BMW bandgap was not a main goal of this research.…”

Section: Resultssupporting

confidence: 52%

Changing the Sensitivity and Operating Range of the Ba2MgWO6 : Eu3+ Optical Thermometer by Applying the Distinct Synthesis Routes

Thq

Miniajluk-Gaweł

et al. 2021

Preprint

Self Cite

The suitability of Ba2MgWO6 (BMW) double perovskite doped with Eu3+ for the construction of an optical thermometer was tested. It has been shown that by controlling the conditions of BMW synthesis, the sensitivity of the optical thermometer and the useful range of its work can be changed. Pure BMW and doped with Eu3+ samples were prepared using the mechano-chemical (MC) and co-precipitation (CP) methods. Both the absolute sensitivity and the relative sensitivity in relation to the synthesis route are estimated. The findings proved that the relative sensitivity can be modulated from 1.17 %K− 1 at 248 K, to 1.5%K− 1 at 120 K for the co-precipitation and the mechanochemical samples, respectively. These spectacular results confirm the applicability of the Ba2MgWO6: Eu3+ for the novel luminescent sensors in high-precision temperature detection devices. Density-functional theory (DFT) was applied to elucidate the origin of the host emission.

“…Such materials are studied as potential phosphors for up-conversion, 12 displays, 13 and luminescent thermometers. [14][15][16][17][18][19] In particular, barium magnesium tungstate with the formula Ba 2 MgWO 6 , abbreviated as BMW, has been studied extensively 18,[20][21][22][23][24][25][26][27][28][29] due to its high symmetry confirmed by the Goldschmidt tolerance factor (1) being very close to 1.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, barium magnesium tungstate with the formula Ba 2 MgWO 6 , abbreviated as BMW, has been studied extensively 18,20–29 due to its high symmetry confirmed by the Goldschmidt tolerance factor (1) being very close to 1.where r A , r B , r B′ and r O are ionic radii of Ba 2+ , Mg 2+ , W 6+ , and O 2− respectively.…”

Section: Introductionmentioning

confidence: 99%

An Er³⁺ doped Ba₂MgWO₆ double perovskite: a phosphor for low-temperature thermometry

Dereń

2022

Dalton Trans.