Structure and Magnetic Properties of Ni-poly(p-xylylene) Nanocomposites Synthesized by Vapor Deposition Polymerization | Sciact - CRIS-system of Boreskov Institute of Catalysis

Structure and Magnetic Properties of Ni-poly(p-xylylene) Nanocomposites Synthesized by Vapor Deposition Polymerization Full article

Journal

Journal of Physics and Chemistry of Solids
ISSN: 0022-3697

Output data

Year: 2017, Volume: 111, Pages: 245-253 Pages count : 9 DOI: 10.1016/j.jpcs.2017.08.004

Tags

Magnetic sensors; Metal-polymer nanocomposites; Ni nanoparticles; Poly(p-xylylene); Structure-property relationships

Authors

Ozerin Sergei A. ^1,2 , Vdovichenko Artem Yu. ^1,2 , Streltsov Dmitry R. ^1,2 , Davydov Alexander B. ³ , Orekhov Anton S. ¹ , Vasiliev Alexander L. ¹ , Zubavichus Yan V. ¹ , Grigoriev Evgenii I. ¹ , Zavyalov Sergei A. ¹ , Oveshnikov Leonid N. ^1,3 , Aronzon Boris A. ^1,3 , Chvalun Sergei N. ^1,2

Affiliations

1	National Research Centre“Kurchatov Institute”
2	N.S. Enikolopov Institute of Synthetic Polymer Materials RAS
3	P.N. Lebedev Physical Institute RAS

The relationship between structure, electrical and magnetic properties of thin poly(p-xylylene) - nickel nanocomposite films with Ni concentrations from 5 to 30 vol% was studied. It was found that metal concentration strongly affects size and oxidation state of the nanoparticles and composites morphology. At nickel concentration below 5 vol% the nanoparticles are oxidized to NiO and homogeneously distributed within fine-grained polymer matrix. An increase of Ni concentration up to 10 vol% results in the development of coarse-grained morphology with preferable localization of the nanoparticles at the boundaries of polymeric grains. And finally, in the composite films with nickel concentration above 20 vol%, the fine-grained morphology is observed again, but the nanoparticles are mainly metallic. Effect of the filler content on electrical and magnetic properties of the nanocomposites was elucidated showing that they are determined by percolation phenomenon with the threshold value of about 10 vol%. The well-pronounced magnetic hysteresis as well as ferromagnetic ordering were observed at Ni content above the percolation threshold. The diagrams of magnetic properties of these composites as a function of composition and temperature were elaborated. It was demonstrated that film annealing can be used to control magnetic properties of the composites and strongly enhance magnetoresistance.

Ozerin S.A. , Vdovichenko A.Y. , Streltsov D.R. , Davydov A.B. , Orekhov A.S. , Vasiliev A.L. , Zubavichus Y.V. , Grigoriev E.I. , Zavyalov S.A. , Oveshnikov L.N. , Aronzon B.A. , Chvalun S.N.
Structure and Magnetic Properties of Ni-poly(p-xylylene) Nanocomposites Synthesized by Vapor Deposition Polymerization
Journal of Physics and Chemistry of Solids. 2017. V.111. P.245-253. DOI: 10.1016/j.jpcs.2017.08.004 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Jun 16, 2017
Accepted:	Aug 2, 2017
Published online:	Aug 3, 2017
Published print:	Dec 1, 2017

Web of science:	WOS:000412609200033
Scopus:	2-s2.0-85028001362
Elibrary:	31057246
Chemical Abstracts:	2017:1315379
Chemical Abstracts (print):	168:403592
OpenAlex:	W2744072008

DB	Citing
Web of science	11
Scopus	11
OpenAlex	12