Magnetic properties of hole-doped SCGO, SrCr8Ga 4xMxO19 (M=Zn, Mg, Cu)

S. E. Dutton; E. D. Hanson; C. L. Broholm; J. S. Slusky; R. J. Cava

doi:10.1088/0953-8984/23/38/386001

Magnetic properties of hole-doped SCGO, SrCr₈Ga _4xM_xO₁₉ (M=Zn, Mg, Cu)

S. E. Dutton, E. D. Hanson, C. L. Broholm, J. S. Slusky, R. J. Cava

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

10 Scopus citations

Abstract

We report changes in the magnetic properties of hole-doped SCGO, SrCr ₈Ga₄O₁₉, induced by replacing non-magnetic Ga³⁺ with both non-magnetic (Mg²⁺ and Zn²⁺) and magnetic (Cu²⁺) cations. The resulting solid solutions, SrCr ₈Ga_4xM_xO₁₉ (M=Zn, Mg, Cu) have been studied by x-ray diffraction and magnetic susceptibility measurements. For all cases, at least 10% of Ga can be replaced by divalent cations resulting in oxidation of 5% of the Cr³⁺ (d³) to Cr⁴⁺ (d²). The hole doping results in an increase in ferromagnetic interactions and reduces the magnetic frustration. In the SrCr ₈Ga_4xCu_xO₁₉ series an enhancement of the spin-glass-like transition is observed, T_f 6K, which we ascribe to the magnetic nature of the Cu²⁺ (d⁹) dopant.

Original language	English (US)
Article number	386001
Journal	Journal of Physics Condensed Matter
Volume	23
Issue number	38
DOIs	https://doi.org/10.1088/0953-8984/23/38/386001
State	Published - Sep 28 2011

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
General Materials Science

Access to Document

10.1088/0953-8984/23/38/386001

Cite this

@article{e6f7c03ba6cf453baa1028d2969518f2,

title = "Magnetic properties of hole-doped SCGO, SrCr8Ga 4xMxO19 (M=Zn, Mg, Cu)",

abstract = "We report changes in the magnetic properties of hole-doped SCGO, SrCr 8Ga4O19, induced by replacing non-magnetic Ga3+ with both non-magnetic (Mg2+ and Zn2+) and magnetic (Cu2+) cations. The resulting solid solutions, SrCr 8Ga4xMxO19 (M=Zn, Mg, Cu) have been studied by x-ray diffraction and magnetic susceptibility measurements. For all cases, at least 10% of Ga can be replaced by divalent cations resulting in oxidation of 5% of the Cr3+ (d3) to Cr4+ (d2). The hole doping results in an increase in ferromagnetic interactions and reduces the magnetic frustration. In the SrCr 8Ga4xCuxO19 series an enhancement of the spin-glass-like transition is observed, Tf 6K, which we ascribe to the magnetic nature of the Cu2+ (d9) dopant.",

author = "Dutton, {S. E.} and Hanson, {E. D.} and Broholm, {C. L.} and Slusky, {J. S.} and Cava, {R. J.}",

year = "2011",

month = sep,

day = "28",

doi = "10.1088/0953-8984/23/38/386001",

language = "English (US)",

volume = "23",

journal = "Journal of Physics Condensed Matter",

issn = "0953-8984",

publisher = "IOP Publishing Ltd.",

number = "38",

}

TY - JOUR

T1 - Magnetic properties of hole-doped SCGO, SrCr8Ga 4xMxO19 (M=Zn, Mg, Cu)

AU - Dutton, S. E.

AU - Hanson, E. D.

AU - Broholm, C. L.

AU - Slusky, J. S.

AU - Cava, R. J.

PY - 2011/9/28

Y1 - 2011/9/28

N2 - We report changes in the magnetic properties of hole-doped SCGO, SrCr 8Ga4O19, induced by replacing non-magnetic Ga3+ with both non-magnetic (Mg2+ and Zn2+) and magnetic (Cu2+) cations. The resulting solid solutions, SrCr 8Ga4xMxO19 (M=Zn, Mg, Cu) have been studied by x-ray diffraction and magnetic susceptibility measurements. For all cases, at least 10% of Ga can be replaced by divalent cations resulting in oxidation of 5% of the Cr3+ (d3) to Cr4+ (d2). The hole doping results in an increase in ferromagnetic interactions and reduces the magnetic frustration. In the SrCr 8Ga4xCuxO19 series an enhancement of the spin-glass-like transition is observed, Tf 6K, which we ascribe to the magnetic nature of the Cu2+ (d9) dopant.

AB - We report changes in the magnetic properties of hole-doped SCGO, SrCr 8Ga4O19, induced by replacing non-magnetic Ga3+ with both non-magnetic (Mg2+ and Zn2+) and magnetic (Cu2+) cations. The resulting solid solutions, SrCr 8Ga4xMxO19 (M=Zn, Mg, Cu) have been studied by x-ray diffraction and magnetic susceptibility measurements. For all cases, at least 10% of Ga can be replaced by divalent cations resulting in oxidation of 5% of the Cr3+ (d3) to Cr4+ (d2). The hole doping results in an increase in ferromagnetic interactions and reduces the magnetic frustration. In the SrCr 8Ga4xCuxO19 series an enhancement of the spin-glass-like transition is observed, Tf 6K, which we ascribe to the magnetic nature of the Cu2+ (d9) dopant.

UR - http://www.scopus.com/inward/record.url?scp=80052932751&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80052932751&partnerID=8YFLogxK

U2 - 10.1088/0953-8984/23/38/386001

DO - 10.1088/0953-8984/23/38/386001

M3 - Article

C2 - 21891853

AN - SCOPUS:80052932751

SN - 0953-8984

VL - 23

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 38

M1 - 386001

ER -

Magnetic properties of hole-doped SCGO, SrCr₈Ga _4xM_xO₁₉ (M=Zn, Mg, Cu)

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this