Zero-field NMR and NQR studies of magnetically ordered state in charge-ordered EuPtP

T. Koyama, T. Maruyama, K. Ueda, T. Mito, Akihiro Mitsuda, M. Umeda, M. Sugishima, Hirofumi Wada

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

EuPtP undergoes two valence transitions and has two kinds of valence states of Eu ions at low temperatures. In the charge-ordered state, this compound shows an antiferromagnetic order ascribed to magnetic divalent Eu ions. We investigated the antiferromagnetically ordered state of EuPtP by nuclear magnetic resonance (NMR) measurement and nuclear quadrupole resonance (NQR) measurement in a zero external magnetic field. The observed Eu153 NMR signals of a magnetic divalent state and Eu151,153 NQR signals of a nonmagnetic trivalent state clearly demonstrate that the spins order in the hexagonal basal plane and the internal magnetic field is not canceled out, even at the Eu3+ layers which are in the middle of magnetic Eu2+ layers. In addition, the observation of 31P and Pt195 NMR spectra allowed us to discuss a possible magnetic structure. We also evaluated the nuclear quadrupole frequencies for both Eu2+ and Eu3+ ion states.

Original languageEnglish
Article number094419
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number9
DOIs
Publication statusPublished - Mar 18 2015

Fingerprint

Nuclear quadrupole resonance
nuclear quadrupole resonance
Nuclear magnetic resonance
Ions
nuclear magnetic resonance
Magnetic resonance measurement
Magnetic fields
valence
ions
Magnetic structure
magnetic fields
quadrupoles
Temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Zero-field NMR and NQR studies of magnetically ordered state in charge-ordered EuPtP. / Koyama, T.; Maruyama, T.; Ueda, K.; Mito, T.; Mitsuda, Akihiro; Umeda, M.; Sugishima, M.; Wada, Hirofumi.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 91, No. 9, 094419, 18.03.2015.

Research output: Contribution to journalArticle

@article{e3c65751c6f34b3381e2f5fecc5c5a3f,
title = "Zero-field NMR and NQR studies of magnetically ordered state in charge-ordered EuPtP",
abstract = "EuPtP undergoes two valence transitions and has two kinds of valence states of Eu ions at low temperatures. In the charge-ordered state, this compound shows an antiferromagnetic order ascribed to magnetic divalent Eu ions. We investigated the antiferromagnetically ordered state of EuPtP by nuclear magnetic resonance (NMR) measurement and nuclear quadrupole resonance (NQR) measurement in a zero external magnetic field. The observed Eu153 NMR signals of a magnetic divalent state and Eu151,153 NQR signals of a nonmagnetic trivalent state clearly demonstrate that the spins order in the hexagonal basal plane and the internal magnetic field is not canceled out, even at the Eu3+ layers which are in the middle of magnetic Eu2+ layers. In addition, the observation of 31P and Pt195 NMR spectra allowed us to discuss a possible magnetic structure. We also evaluated the nuclear quadrupole frequencies for both Eu2+ and Eu3+ ion states.",
author = "T. Koyama and T. Maruyama and K. Ueda and T. Mito and Akihiro Mitsuda and M. Umeda and M. Sugishima and Hirofumi Wada",
year = "2015",
month = "3",
day = "18",
doi = "10.1103/PhysRevB.91.094419",
language = "English",
volume = "91",
journal = "Physical Review B - Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "American Physical Society",
number = "9",

}

TY - JOUR

T1 - Zero-field NMR and NQR studies of magnetically ordered state in charge-ordered EuPtP

AU - Koyama, T.

AU - Maruyama, T.

AU - Ueda, K.

AU - Mito, T.

AU - Mitsuda, Akihiro

AU - Umeda, M.

AU - Sugishima, M.

AU - Wada, Hirofumi

PY - 2015/3/18

Y1 - 2015/3/18

N2 - EuPtP undergoes two valence transitions and has two kinds of valence states of Eu ions at low temperatures. In the charge-ordered state, this compound shows an antiferromagnetic order ascribed to magnetic divalent Eu ions. We investigated the antiferromagnetically ordered state of EuPtP by nuclear magnetic resonance (NMR) measurement and nuclear quadrupole resonance (NQR) measurement in a zero external magnetic field. The observed Eu153 NMR signals of a magnetic divalent state and Eu151,153 NQR signals of a nonmagnetic trivalent state clearly demonstrate that the spins order in the hexagonal basal plane and the internal magnetic field is not canceled out, even at the Eu3+ layers which are in the middle of magnetic Eu2+ layers. In addition, the observation of 31P and Pt195 NMR spectra allowed us to discuss a possible magnetic structure. We also evaluated the nuclear quadrupole frequencies for both Eu2+ and Eu3+ ion states.

AB - EuPtP undergoes two valence transitions and has two kinds of valence states of Eu ions at low temperatures. In the charge-ordered state, this compound shows an antiferromagnetic order ascribed to magnetic divalent Eu ions. We investigated the antiferromagnetically ordered state of EuPtP by nuclear magnetic resonance (NMR) measurement and nuclear quadrupole resonance (NQR) measurement in a zero external magnetic field. The observed Eu153 NMR signals of a magnetic divalent state and Eu151,153 NQR signals of a nonmagnetic trivalent state clearly demonstrate that the spins order in the hexagonal basal plane and the internal magnetic field is not canceled out, even at the Eu3+ layers which are in the middle of magnetic Eu2+ layers. In addition, the observation of 31P and Pt195 NMR spectra allowed us to discuss a possible magnetic structure. We also evaluated the nuclear quadrupole frequencies for both Eu2+ and Eu3+ ion states.

UR - http://www.scopus.com/inward/record.url?scp=84925845555&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84925845555&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.91.094419

DO - 10.1103/PhysRevB.91.094419

M3 - Article

AN - SCOPUS:84925845555

VL - 91

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

SN - 1098-0121

IS - 9

M1 - 094419

ER -