Structural and magnetic characteristics of Zn0.95-xCo0.05AlxO:H powders

Dooyong Lee; Yun Hee Cho; Ji Woong Kim; Hyegyeong Kim; Dongjin Kim; Sungkyun Park

doi:10.3938/NPSM.65.1049

Structural and magnetic characteristics of Zn_0.95-xCo_0.05Al_xO:H powders

Dooyong Lee, Yun Hee Cho, Ji Woong Kim, Hyegyeong Kim, Dongjin Kim, Sungkyun Park

Pusan National University

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

Abstract

Al-doped Zn_0.95-xCo_0.05Al_xO (x = 0, 0.03, 0.05) powders were synthesized by using a solid-state reaction method and were annealed in hydrogen environments for 3 hours. The Al-content dependent structural and magnetic properties were examined for the as-prepared and the post-annealed powders. A Rietveld analysis revealed that most of the powders had a wurtzite structure with small amounts (3%) of the Co₃O₄ phase. With increased Al content, the powders experienced compression (increased 2θ) due to the discrepancy in the ionic radius of Al with degraded crystallinity. On the other hand, the magnetic characteristics, such as the saturation magnetization, remnant magnetization and coercivity, improved with increased Al content.

Original language	English
Pages (from-to)	1049-1052
Number of pages	4
Journal	New Physics: Sae Mulli
Volume	65
Issue number	11
DOIs	https://doi.org/10.3938/NPSM.65.1049
State	Published - 1 Nov 2015

Keywords

Dilute magnetic semiconductor
Rietveld analysis
Room-temperature ferromagnetism
ZnCoAlO

Access to Document

10.3938/NPSM.65.1049

Cite this

@article{990e4b246f514072b5eb3c48777c6675,

title = "Structural and magnetic characteristics of Zn0.95-xCo0.05AlxO:H powders",

abstract = "Al-doped Zn0.95-xCo0.05AlxO (x = 0, 0.03, 0.05) powders were synthesized by using a solid-state reaction method and were annealed in hydrogen environments for 3 hours. The Al-content dependent structural and magnetic properties were examined for the as-prepared and the post-annealed powders. A Rietveld analysis revealed that most of the powders had a wurtzite structure with small amounts (3%) of the Co3O4 phase. With increased Al content, the powders experienced compression (increased 2θ) due to the discrepancy in the ionic radius of Al with degraded crystallinity. On the other hand, the magnetic characteristics, such as the saturation magnetization, remnant magnetization and coercivity, improved with increased Al content.",

keywords = "Dilute magnetic semiconductor, Rietveld analysis, Room-temperature ferromagnetism, ZnCoAlO",

author = "Dooyong Lee and Cho, {Yun Hee} and Kim, {Ji Woong} and Hyegyeong Kim and Dongjin Kim and Sungkyun Park",

year = "2015",

month = nov,

day = "1",

doi = "10.3938/NPSM.65.1049",

language = "English",

volume = "65",

pages = "1049--1052",

journal = "New Physics: Sae Mulli",

issn = "0374-4914",

publisher = "Korean Physical Society",

number = "11",

}

TY - JOUR

T1 - Structural and magnetic characteristics of Zn0.95-xCo0.05AlxO:H powders

AU - Lee, Dooyong

AU - Cho, Yun Hee

AU - Kim, Ji Woong

AU - Kim, Hyegyeong

AU - Kim, Dongjin

AU - Park, Sungkyun

PY - 2015/11/1

Y1 - 2015/11/1

N2 - Al-doped Zn0.95-xCo0.05AlxO (x = 0, 0.03, 0.05) powders were synthesized by using a solid-state reaction method and were annealed in hydrogen environments for 3 hours. The Al-content dependent structural and magnetic properties were examined for the as-prepared and the post-annealed powders. A Rietveld analysis revealed that most of the powders had a wurtzite structure with small amounts (3%) of the Co3O4 phase. With increased Al content, the powders experienced compression (increased 2θ) due to the discrepancy in the ionic radius of Al with degraded crystallinity. On the other hand, the magnetic characteristics, such as the saturation magnetization, remnant magnetization and coercivity, improved with increased Al content.

AB - Al-doped Zn0.95-xCo0.05AlxO (x = 0, 0.03, 0.05) powders were synthesized by using a solid-state reaction method and were annealed in hydrogen environments for 3 hours. The Al-content dependent structural and magnetic properties were examined for the as-prepared and the post-annealed powders. A Rietveld analysis revealed that most of the powders had a wurtzite structure with small amounts (3%) of the Co3O4 phase. With increased Al content, the powders experienced compression (increased 2θ) due to the discrepancy in the ionic radius of Al with degraded crystallinity. On the other hand, the magnetic characteristics, such as the saturation magnetization, remnant magnetization and coercivity, improved with increased Al content.

KW - Dilute magnetic semiconductor

KW - Rietveld analysis

KW - Room-temperature ferromagnetism

KW - ZnCoAlO

UR - http://www.scopus.com/inward/record.url?scp=84951986266&partnerID=8YFLogxK

U2 - 10.3938/NPSM.65.1049

DO - 10.3938/NPSM.65.1049

M3 - Article

AN - SCOPUS:84951986266

SN - 0374-4914

VL - 65

SP - 1049

EP - 1052

JO - New Physics: Sae Mulli

JF - New Physics: Sae Mulli

IS - 11

ER -

Structural and magnetic characteristics of Zn_0.95-xCo_0.05Al_xO:H powders

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this