Spin glass behavior in complexes of iron doped coordinated polymers

Kh A. Ziq; H. El-Ghanem; I. Arafa; Y. Hamam

doi:10.1016/j.jnoncrysol.2006.11.044

Spin glass behavior in complexes of iron doped coordinated polymers

Kh A. Ziq^*
, H. El-Ghanem
, I. Arafa
, Y. Hamam

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Magnetization measurements were performed on metal polycarbosilazane complexes polymers doped with Fe(II) and Fe(III)-ions. Zero field cooled (ZFC) and field cooled (FC) magnetization for Fe(II) doped polymer were found to bifurcates at a freezing temperature T_g, showing typical spin glass behavior but at much higher fields (∼kOe) than what is commonly observed in metallic spin glass(∼Oe). However, the ZFC magnetization of Fe(III) doped polymer did not reveal any spin-glass behavior. The magnetization curves showed very little Hysteresis effects and saturate at about 40 kOe at 2 K then drops sharply at 20 K. The saturation magnetization continues to drop gradually up to room temperature ∼300 K.

Original language	English
Pages (from-to)	1386-1388
Number of pages	3
Journal	Journal of Non-Crystalline Solids
Volume	354
Issue number	12-13
DOIs	https://doi.org/10.1016/j.jnoncrysol.2006.11.044
State	Published - 15 Feb 2008

Keywords

75.30.Hx
75.50.Lk
Magnetic properties
Polymers and organics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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10.1016/j.jnoncrysol.2006.11.044

Cite this

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title = "Spin glass behavior in complexes of iron doped coordinated polymers",

abstract = "Magnetization measurements were performed on metal polycarbosilazane complexes polymers doped with Fe(II) and Fe(III)-ions. Zero field cooled (ZFC) and field cooled (FC) magnetization for Fe(II) doped polymer were found to bifurcates at a freezing temperature Tg, showing typical spin glass behavior but at much higher fields (∼kOe) than what is commonly observed in metallic spin glass(∼Oe). However, the ZFC magnetization of Fe(III) doped polymer did not reveal any spin-glass behavior. The magnetization curves showed very little Hysteresis effects and saturate at about 40 kOe at 2 K then drops sharply at 20 K. The saturation magnetization continues to drop gradually up to room temperature ∼300 K.",

keywords = "75.30.Hx, 75.50.Lk, Magnetic properties, Polymers and organics",

author = "Ziq, \{Kh A.\} and H. El-Ghanem and I. Arafa and Y. Hamam",

year = "2008",

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doi = "10.1016/j.jnoncrysol.2006.11.044",

language = "English",

volume = "354",

pages = "1386--1388",

journal = "Journal of Non-Crystalline Solids",

issn = "0022-3093",

publisher = "Elsevier B.V.",

number = "12-13",

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TY - JOUR

T1 - Spin glass behavior in complexes of iron doped coordinated polymers

AU - Ziq, Kh A.

AU - El-Ghanem, H.

AU - Arafa, I.

AU - Hamam, Y.

PY - 2008/2/15

Y1 - 2008/2/15

N2 - Magnetization measurements were performed on metal polycarbosilazane complexes polymers doped with Fe(II) and Fe(III)-ions. Zero field cooled (ZFC) and field cooled (FC) magnetization for Fe(II) doped polymer were found to bifurcates at a freezing temperature Tg, showing typical spin glass behavior but at much higher fields (∼kOe) than what is commonly observed in metallic spin glass(∼Oe). However, the ZFC magnetization of Fe(III) doped polymer did not reveal any spin-glass behavior. The magnetization curves showed very little Hysteresis effects and saturate at about 40 kOe at 2 K then drops sharply at 20 K. The saturation magnetization continues to drop gradually up to room temperature ∼300 K.

AB - Magnetization measurements were performed on metal polycarbosilazane complexes polymers doped with Fe(II) and Fe(III)-ions. Zero field cooled (ZFC) and field cooled (FC) magnetization for Fe(II) doped polymer were found to bifurcates at a freezing temperature Tg, showing typical spin glass behavior but at much higher fields (∼kOe) than what is commonly observed in metallic spin glass(∼Oe). However, the ZFC magnetization of Fe(III) doped polymer did not reveal any spin-glass behavior. The magnetization curves showed very little Hysteresis effects and saturate at about 40 kOe at 2 K then drops sharply at 20 K. The saturation magnetization continues to drop gradually up to room temperature ∼300 K.

KW - 75.30.Hx

KW - 75.50.Lk

KW - Magnetic properties

KW - Polymers and organics

UR - https://www.scopus.com/pages/publications/38649100690

U2 - 10.1016/j.jnoncrysol.2006.11.044

DO - 10.1016/j.jnoncrysol.2006.11.044

M3 - Article

AN - SCOPUS:38649100690

SN - 0022-3093

VL - 354

SP - 1386

EP - 1388

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

IS - 12-13

ER -

Spin glass behavior in complexes of iron doped coordinated polymers

Abstract

Keywords

ASJC Scopus subject areas

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