Synthesis and Optical Properties of New Double Perovskite Oxides A2LaVO6 (A= Sr, Ba, Ca)

Abstract

New

double

perovskite oxide

A

2

LaVO

6

where A= Ba, Sr and Ca

were synthesized

through solid state reaction route. The information about the molecular bonding is

obtained from the FTIR spectra. The calculated band gap from UN

-

Visible spectra

characterizes the (insulating) nature of the material

and

a

data analysis

the result showed

that all posses high band gab energy (3.9

–

4.2

–

4.4eV) respectively. The absorption is

(1.5, 1.6 and 4.7), an extinction coefficient (0.002, 0.008 and

0.082

), for all samples

and

A ={Ba, Sr, Ca}

9

Abstract

New

double

perovskite oxide

A

2

LaVO

6

where A= Ba, Sr and Ca

were synthesized

through solid state reaction route. The information about the molecular bonding is

obtained from the FTIR spectra. The calculated band gap from UN

-

Visible spectra

characterizes the (insulating) nature of the material

and

a

data analysis

the result showed

that all posses high band gab energy (3.9

–

4.2

–

4.4eV) respectively. The absorption is

(1.5, 1.6 and 4.7), an extinction coefficient (0.002, 0.008 and

0.082

), for all samples

and

A ={Ba, Sr, Ca}.

المستخلص

حى

ححضيز

ثلاثت

عيُاث

جذيذة

يٍ

اكاسيذ

انبزٔفسكايج

انثُائيت

(

A

2

LaVO

6

)

حيث

أٌ

(

A= Ba, Sr ,Ca

.

)

حى

يعانجخٓا

حزاريا

.

حى

اسخخذاو

جٓاس

قياس

طيف

الاشعت

ححج

انحًزاء

(

FTIR

)

حى

ححذيذ

حزابظ

ْذِ

الاكاسيذ

يعزفت

َٕع

انزٔابظ

في

ْذِ

انعيُاث

انثلاثت

.

يٍ

جٓاس يطياف الاشعت فٕق انبُفسجيت حى حساب فجٕاث انطاقّ نهعيُاث انثلاثت انخي حذدث طبيعت

انًادة بآَا عاسنت ٔكاَج قيى فجٕاث انطاقت

(3.9, 4.2 and 4.4)

عهى انخٕانى

.

ٔ ٔجذ يعايم

الايخصاص

(1.5, 1.6 and 4.7

)

ٔيعايم انخْٕيٍ

(0.002, 0.008 and

0.082

),

نكم انعيُاث

حيث