Precursor synthesis and magnetic properties of Cd1-xFexO (0 <= x <= 0.07) polycrystalline solid solutions / Krasilnikov V. N.,Zhukov V. P.,Gyrdasova O. I.,Dyachkova T. V.,Tyutyunnik A. P.,Perevozchikova Yu. A.,Weber H. W.,Zaleski A.,Marchenkov V. V. // JOURNAL OF ALLOYS AND COMPOUNDS. - 2017. - V. 725, l. . - P. 1244-1251.

ISSN/EISSN:

0925-8388 / 1873-4669

Type:

Article

Abstract:

Polycrystalline solid solutions Cd1-xFexO (0 < x <= 0.07) have been synthesized by the precursor method using formate of the composition Cd1-xFex(HCOO)(2)center dot 2H(2)O as a precursor. For the production of Cd1-xFexO, the precursor was annealed in air at a maximal temperature of 400 degrees C. At x >= 0.075, an impurity CdFe2O4 ferrite phase with cubic spinel structure was detected in the samples. The examination of the magnetic properties of Cd1-xFexO at 5 and 300 K revealed that they are ferromagnets, whose magnetization increases with the concentration of iron both at low and room temperature reaching the maximal values in samples with x = 0.07. In order to determine the degree of oxidation and the spin state of iron atoms, the main interatomic interactions giving rise to ferromagnetism as well as to estimate the Curie temperatures, we also performed first-principle calculations of the electronic band structure. They showed the existence of chemical bonding between adjacent iron atoms leading to the appearance of ferromagnetism by direct exchange. The value of the Curie temperature calculated by the mean field method on the basis of the first-principle calculations is 507 K, which is in reasonable agreement with the experimental value of 560 K. (C) 2017 Elsevier B.V. All rights reserved.

Author keywords:

Precursor synthesis; Magnetization; Cadmium oxide; Spintronics; Mean field method MATRIX INFRARED-SPECTROSCOPY; ROOM-TEMPERATURE FERROMAGNETISM; CADMIUM-OXIDE NANOPARTICLES; MIXED-CRYSTALS; THERMAL-DECOMPOSITION; BAND-GAP; STRUCTURAL-CHARACTERIZATION; CATION DISTRIBUTION; FORMATE DIHYDRATE; VAPOR TRANSPORT

DOI:

10.1016/j.jallcom.2017.07.255

Web of Science ID:

ISI:000412332900146

Соавторы в МНС:

—

Другие поля

Поле	Значение
Month	NOV 25
Publisher	ELSEVIER SCIENCE SA
Address	PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Language	English
EISSN	1873-4669
Keywords-Plus	MATRIX INFRARED-SPECTROSCOPY; ROOM-TEMPERATURE FERROMAGNETISM; CADMIUM-OXIDE NANOPARTICLES; MIXED-CRYSTALS; THERMAL-DECOMPOSITION; BAND-GAP; STRUCTURAL-CHARACTERIZATION; CATION DISTRIBUTION; FORMATE DIHYDRATE; VAPOR TRANSPORT
Research-Areas	Chemistry; Materials Science; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy \& Metallurgical Engineering
Author-Email	kras@ihim.uran.ru
ResearcherID-Numbers	Marchenkov, Vyacheslav/J-7698-2013
ORCID-Numbers	Marchenkov, Vyacheslav/0000-0003-2044-1789 Perevozchikova, Yulia/0000-0003-3066-9330
Funding-Acknowledgement	RFBR {[}15-03-02908-a]; Presidium of the Ural Branch, Russian Academy of Sciences {[}15-9-3-31, 15-17-3-44]; Government of the Russian Federation {[}02.A03.21.0006]
Funding-Text	The study was carried out within the state assignment of FASO of Russia (theme ``Spin{''} No 01201463330), supported in part by the RFBR (project No. 15-03-02908-a) and the Presidium of the Ural Branch, Russian Academy of Sciences (projects No. 15-9-3-31 and No. 15-17-3-44). The first-principle calculations were carried out at the computer cluster Uran at the Institute of Mathematics and Mechanics of the Ural Branch of RAS supported in part by the Government of the Russian Federation (No. 02.A03.21.0006).
Number-of-Cited-References	66
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	3
Journal-ISO	J. Alloy. Compd.
Doc-Delivery-Number	FI9MQ