Results 71 to 80 of about 38,396 (204)

THE OPTICAL SPECTRA OF Co2+ IN MgAl2O4 SPINEL

, 1991
The spectroscopic properties of MgAl2O4 spinel doped by Co2+ ions are characterized by low ligand fields strength.
P.J. DEREN, I. TRABJERG, W. STREK, B . JEZOWSKA-TRZEBIATOWSKA   +3 more
core   +1 more source

Production, stability and properties of ultrafine MgAl2O4 (spinel) particles stabilized Mg–3Ca alloy foams

Journal of Materials Research and Technology
The present work reports the synthesis and mechanical behavior studies of Mg–3Ca alloy foams stabilized by ultrafine MgAl2O4 (spinel) particles. The MgAl2O4 particles was created in-situ in the Mg–3Ca alloy melt through the reaction of Mg, Al and O ...
Dipak Bhosale, K. Georgy, Manas Mukherjee, G.S. Vinod Kumar   +3 more
doaj   +1 more source

TỔNG HỢP CHẤT MÀU XANH COBAN CoxMg1–xAl2O4 DÙNG TRONG GỐM SỨ BẰNG PHƯƠNG PHÁP PECHINI

Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2019
Bài báo trình bày quá trình tổng hợp chất màu xanh coban CoxMg1–xAl2O4 (x = 0,1÷0,9) theo phương pháp Pechini. Các đặc trưng của sản phẩm chất màu được xác định bởi phương pháp nhiễu xạ tia X (XRD), phân tích nhiệt (TG–DSC), hiển vi điện tử quét (SEM ...
Tran Ngoc Tuyen, Ho Van Minh Hai, Nguyen Duc Hoang   +2 more
doaj   +1 more source

A comparative study on photodegradation of industrial dyes using alkaline earth metal spinel photocatalysts

European Journal of Materials
The sol-gel auto combustion technique was employed to synthesize nanocrystalline alkaline earth metal (M = Mg, Ca) spinel aluminate (MAl2O4) and ferrite (MFe2O4) photocatalysts. Subsequently, XRD, FT-IR, SEM, TEM, BET method, and UV-DRS were performed to
Thanit Tangcharoen
doaj   +1 more source

Transparent MgAl2O4 spinel by double sintering process

, 2016
Transparent polycrystalline ceramic with magnesium aluminate (MgAl2O4) spinel composition is an attractive material for several optical applications [1,2].
Adrian Goldstein, Andreana Piancastelli, Laura Esposito, Valentina Biasini, Jan Hostasa   +4 more
core  

Impact of Cobalt Doping on the Structural, Optical, and Dielectric Properties of MgAl₂O₄ Spinel Material. [PDF]

ACS Omega, 2023
Ullah K, Khan SA, Zaman A, Sarker MR, Ali A, Tirth V, Alsuhaibani AM, Algahtani A, Al-Mughanam T, Refat MS, Sahrani S, Abrar M.   +11 more
europepmc   +1 more source

BROAD-BAND EMISSION OF Cr3+ IN MgAl2O4 SPINEL

, 1987
The double luminescence behaviour of Cr (III) in synthetic MgAl2O4 spinel was observed. The nature of such a behaviour is investigated by means the time-resolved luminescence studies at different excitation wavelengths.
P. DERE, W. STREK, B. JEZOWSKA-TRZEBIATOWSKA   +2 more
core   +1 more source

Use photoluminescence of Cr3+ as a local probe for order-disorder transition process in MgAl2O4 spinel

, 2019
Natural Cr3+ doped MgAl2O4 spinel samples were quenched and annealed at several temperatures.
Wang, C
core   +2 more sources

Noncontact atomic force microscopy study of the spinel MgAl2O4(111) surface

Beilstein Journal of Nanotechnology, 2012
Based on high-resolution noncontact atomic force microscopy (NC-AFM) experiments we reveal a detailed structural model of the polar (111) surface of the insulating ternary metal oxide, MgAl2O4 (spinel).
Morten K. Rasmussen, Kristoffer Meinander, Flemming Besenbacher, Jeppe V. Lauritsen   +3 more
doaj   +1 more source

Self-Propagating High Temperature Synthesis of TiB2–MgAl2O4 Composites

Metals, 2017
Metal borides are widely used as heat-insulating materials, however, the range of their application in high-temperature conditions with oxidative medium is significantly restricted.
Nina Radishevskaya, Olga Lepakova, Natalia Karakchieva, Anastasiya Nazarova, Nikolai Afanasiev, Anna Godymchuk, Alexander Gusev   +6 more
doaj   +1 more source