Gd(III) doping effect on magnetization and water proton relaxivities in ultra small iron oxide nanoparticles

Eun Sook Choi; Wenlong Xu; Myung Ju Baek; Ja Young Park; Joo Hyun Kim; Yongmin Chang; Tae Jeong Kim; Gang Ho Lee

doi:10.1063/1.4813307

Gd(III) doping effect on magnetization and water proton relaxivities in ultra small iron oxide nanoparticles

Eun Sook Choi, Wenlong Xu, Myung Ju Baek, Ja Young Park, Joo Hyun Kim, Yongmin Chang, Tae Jeong Kim, Gang Ho Lee

Kyungpook National University

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

5 Scopus citations

Abstract

Two samples of ultra small Gd(III) doped iron oxide nanoparticles were prepared to investigate Gd(III) doping effect on longitudinal (r₁) and transverse (r₂) water proton relaxivities. Gd(III) doping mole percents were 0.2 and 0.4 for samples 1 and 2, respectively. Average particle diameters were 2.5 to 2.1 nm for samples 1 and 2, respectively. Reduced r ₁ and r₂ values were observed in both samples. We attributed this to reduced magnetizations arising from opposing effect of Gd(III) to net magnetizations of Fe(III)/Fe(II) in oxide nanoparticles.

Original language	English
Article number	072101
Journal	AIP Advances
Volume	3
Issue number	7
DOIs	https://doi.org/10.1063/1.4813307
State	Published - Jul 2013

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title = "Gd(III) doping effect on magnetization and water proton relaxivities in ultra small iron oxide nanoparticles",

abstract = "Two samples of ultra small Gd(III) doped iron oxide nanoparticles were prepared to investigate Gd(III) doping effect on longitudinal (r1) and transverse (r2) water proton relaxivities. Gd(III) doping mole percents were 0.2 and 0.4 for samples 1 and 2, respectively. Average particle diameters were 2.5 to 2.1 nm for samples 1 and 2, respectively. Reduced r 1 and r2 values were observed in both samples. We attributed this to reduced magnetizations arising from opposing effect of Gd(III) to net magnetizations of Fe(III)/Fe(II) in oxide nanoparticles.",

author = "Choi, {Eun Sook} and Wenlong Xu and Baek, {Myung Ju} and Park, {Ja Young} and Kim, {Joo Hyun} and Yongmin Chang and Kim, {Tae Jeong} and Lee, {Gang Ho}",

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doi = "10.1063/1.4813307",

language = "English",

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journal = "AIP Advances",

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T1 - Gd(III) doping effect on magnetization and water proton relaxivities in ultra small iron oxide nanoparticles

AU - Choi, Eun Sook

AU - Xu, Wenlong

AU - Baek, Myung Ju

AU - Park, Ja Young

AU - Kim, Joo Hyun

AU - Chang, Yongmin

AU - Kim, Tae Jeong

AU - Lee, Gang Ho

PY - 2013/7

Y1 - 2013/7

N2 - Two samples of ultra small Gd(III) doped iron oxide nanoparticles were prepared to investigate Gd(III) doping effect on longitudinal (r1) and transverse (r2) water proton relaxivities. Gd(III) doping mole percents were 0.2 and 0.4 for samples 1 and 2, respectively. Average particle diameters were 2.5 to 2.1 nm for samples 1 and 2, respectively. Reduced r 1 and r2 values were observed in both samples. We attributed this to reduced magnetizations arising from opposing effect of Gd(III) to net magnetizations of Fe(III)/Fe(II) in oxide nanoparticles.

AB - Two samples of ultra small Gd(III) doped iron oxide nanoparticles were prepared to investigate Gd(III) doping effect on longitudinal (r1) and transverse (r2) water proton relaxivities. Gd(III) doping mole percents were 0.2 and 0.4 for samples 1 and 2, respectively. Average particle diameters were 2.5 to 2.1 nm for samples 1 and 2, respectively. Reduced r 1 and r2 values were observed in both samples. We attributed this to reduced magnetizations arising from opposing effect of Gd(III) to net magnetizations of Fe(III)/Fe(II) in oxide nanoparticles.

UR - http://www.scopus.com/inward/record.url?scp=84882295513&partnerID=8YFLogxK

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DO - 10.1063/1.4813307

M3 - Article

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SN - 2158-3226

VL - 3

JO - AIP Advances

JF - AIP Advances

IS - 7

M1 - 072101

ER -

Gd(III) doping effect on magnetization and water proton relaxivities in ultra small iron oxide nanoparticles

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