Effect of calcination temperatures on optical and magnetic properties of FeWO<sub>4</sub> nanoparticles-Reference-Cited by-同舟云学术

Effect of calcination temperatures on optical and magnetic properties of FeWO₄ nanoparticles

Published:2024-03-01 Issue:1 Volume:26 Page:16-23
ISSN:1899-4741
Container-title:Polish Journal of Chemical Technology
language:en
Short-container-title:

Author:

Nguyen Anh Q.K.¹,Tran Thi K.N.¹,Hoang Bich N.¹,Quyen Ngo T.C.¹,Huynh Tai T.²,Yen Nguyen P.³,Nguyen Bich N.⁴

Affiliation:

1. Institute of Applied Technology and Sustainable Development , Nguyen Tat Thanh University , Ho Chi Minh City , Viet Nam

2. Ho Chi Minh City University of Natural Resources and Environment ( HCMUNRE ), Ho Chi Minh City , Vietnam

3. Youth Development Science and Technology Center , Ho Chi Minh City , Viet Nam

4. Dong Thap University , Cao Lanh City , , Viet Nam

Abstract

Abstract Calcination temperature is a crucial parameter that can be easily controlled to induce a change in material properties. Herein, iron tungstate (FeWO4) was synthesized via a hydrothermal method using iron(II) sulfate heptahydrate and sodium tungstate dihydrate as precursors and calcined at the temperature between 300 oC and 700 oC. With increasing calcination temperature, the saturation magnetization of FeWO4 nanoparticles decreased from 6.6 emu/g for FeWO4 to 0.4 emu/g for FeWO4_700, whereas their band gaps increased from 1.95 eV for FeWO4 to 2.20 eV for FeWO4_700. More crystallinity and crystal defects, and morphological changes at higher calcination temperatures contributed to varying magneto-optical properties of FeWO4 nanoparticles.

Publisher

Walter de Gruyter GmbH

Link

https://www.sciendo.com/pdf/10.2478/pjct-2024-0003

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