Electron spin resonance of Cr5+ in YPO4 and YVO 4

M. Greenblatt; J. H. Pifer; B. R. McGarvey; B. M. Wanklyn

doi:10.1063/1.441041

Electron spin resonance of Cr⁵⁺ in YPO₄ and YVO ₄

M. Greenblatt, J. H. Pifer, B. R. McGarvey, B. M. Wanklyn

School of Arts and Sciences, Chemistry & Chemical Biology

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

37 Scopus citations

Abstract

The ESR of CrO₄ ^3- has been studied at 4.2 K in single crystal YPO₄ and YVO₄. The g values and ⁵³Cr hyperfine constants are g_∥=1.9772, g⊥=1.9525, A∥=8.5x10^-4 cm^-1, A₁=19.6X10^-4 cm^-1 for YPO₄ and g∥=1.9773, gi=1.9511, A=8.6xl0 ^-4 cm^-1, A₁=18.7X10^-4 cm ^-1 for YVO₄. The resonances show an isotropic superhyperfine splitting due to the two nearest neighbor yttrium ions. The PO₄ and VO₄ tetrahedra are distorted to D_2d symmetry by a e axis stretch and a crystal field model predicts a _dx2y2 ground state for the d¹ electron on CrO₄ in these hosts. But a dzl state is observed. We attribute the inversion to strong covalency. The g and A values cannot be explained with D_2d symmetry and the width of the superhyperfine lines is orientation and magnetic field dependent. We believe these anomalies are due to motional effects.

Original language	English (US)
Pages (from-to)	6014-6017
Number of pages	4
Journal	The Journal of Chemical Physics
Volume	74
Issue number	11
DOIs	https://doi.org/10.1063/1.441041
State	Published - 1981

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

Access to Document

10.1063/1.441041

Cite this

@article{77f13e03df854648a041ce982e9630c0,

title = "Electron spin resonance of Cr5+ in YPO4 and YVO 4 ",

abstract = "The ESR of CrO4 3- has been studied at 4.2 K in single crystal YPO4 and YVO4. The g values and 53Cr hyperfine constants are g∥=1.9772, g⊥=1.9525, A∥=8.5x10-4 cm-1, A1=19.6X10-4 cm-1 for YPO4 and g∥=1.9773, gi=1.9511, A=8.6xl0 -4 cm-1, A1=18.7X10-4 cm -1 for YVO4. The resonances show an isotropic superhyperfine splitting due to the two nearest neighbor yttrium ions. The PO4 and VO4 tetrahedra are distorted to D2d symmetry by a e axis stretch and a crystal field model predicts a dx2y2 ground state for the d1 electron on CrO4 in these hosts. But a dzl state is observed. We attribute the inversion to strong covalency. The g and A values cannot be explained with D2d symmetry and the width of the superhyperfine lines is orientation and magnetic field dependent. We believe these anomalies are due to motional effects.",

author = "M. Greenblatt and Pifer, {J. H.} and McGarvey, {B. R.} and Wanklyn, {B. M.}",

year = "1981",

doi = "10.1063/1.441041",

language = "English (US)",

volume = "74",

pages = "6014--6017",

journal = "The Journal of Chemical Physics",

issn = "0021-9606",

publisher = "American Institute of Physics",

number = "11",

}

TY - JOUR

T1 - Electron spin resonance of Cr5+ in YPO4 and YVO 4

AU - Greenblatt, M.

AU - Pifer, J. H.

AU - McGarvey, B. R.

AU - Wanklyn, B. M.

PY - 1981

Y1 - 1981

N2 - The ESR of CrO4 3- has been studied at 4.2 K in single crystal YPO4 and YVO4. The g values and 53Cr hyperfine constants are g∥=1.9772, g⊥=1.9525, A∥=8.5x10-4 cm-1, A1=19.6X10-4 cm-1 for YPO4 and g∥=1.9773, gi=1.9511, A=8.6xl0 -4 cm-1, A1=18.7X10-4 cm -1 for YVO4. The resonances show an isotropic superhyperfine splitting due to the two nearest neighbor yttrium ions. The PO4 and VO4 tetrahedra are distorted to D2d symmetry by a e axis stretch and a crystal field model predicts a dx2y2 ground state for the d1 electron on CrO4 in these hosts. But a dzl state is observed. We attribute the inversion to strong covalency. The g and A values cannot be explained with D2d symmetry and the width of the superhyperfine lines is orientation and magnetic field dependent. We believe these anomalies are due to motional effects.

AB - The ESR of CrO4 3- has been studied at 4.2 K in single crystal YPO4 and YVO4. The g values and 53Cr hyperfine constants are g∥=1.9772, g⊥=1.9525, A∥=8.5x10-4 cm-1, A1=19.6X10-4 cm-1 for YPO4 and g∥=1.9773, gi=1.9511, A=8.6xl0 -4 cm-1, A1=18.7X10-4 cm -1 for YVO4. The resonances show an isotropic superhyperfine splitting due to the two nearest neighbor yttrium ions. The PO4 and VO4 tetrahedra are distorted to D2d symmetry by a e axis stretch and a crystal field model predicts a dx2y2 ground state for the d1 electron on CrO4 in these hosts. But a dzl state is observed. We attribute the inversion to strong covalency. The g and A values cannot be explained with D2d symmetry and the width of the superhyperfine lines is orientation and magnetic field dependent. We believe these anomalies are due to motional effects.

UR - http://www.scopus.com/inward/record.url?scp=0001250757&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001250757&partnerID=8YFLogxK

U2 - 10.1063/1.441041

DO - 10.1063/1.441041

M3 - Article

AN - SCOPUS:0001250757

SN - 0021-9606

VL - 74

SP - 6014

EP - 6017

JO - The Journal of Chemical Physics

JF - The Journal of Chemical Physics

IS - 11

ER -

Electron spin resonance of Cr⁵⁺ in YPO₄ and YVO ₄

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this