Ultrasound measurements in the spinel compound GeCo<sub>2</sub>O<sub>4</sub>

Sasame, Hiroki; Yoshimoto, Hidesuke; Takahashi, Yasuhiko; Watanabe, T.; Takase, Kouichi; Takano, Yoshiki; Hara, Shigeo; Ikeda, S.

doi:10.1088/1742-6596/92/1/012154

Search citation statements

Order By: Relevance

Paper Sections

Select...

Introduction1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2017

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This distortion was proposed to be mainly cubic-to-tetragonal from powder neutron and X-ray diffraction [1,15]. Besides this zero-field magnetostructural behavior, a complex H-T phase diagram has been observed in GeCo 2 O 4 by magnetization, ultrasound and electron spin resonance measurements, evidencing several fieldinduced anomalies [1,9,[16][17][18][19][20][21][22]. Their microscopic origin was investigated by powder neutron diffraction under magnetic field up to 10 T [10].…”

Section: Introductionmentioning

confidence: 99%

Field-driven magnetostructural transitions in GeCo2O4

et al. 2017

View full text Add to dashboard Cite

In the spinel compound GeCo2O4, the Co 2+ pyrochlore sublattice presents remarkable magnetic field-induced behaviors that we unveil through neutron and X-ray single-crystal diffraction. The Néel ordered magnetic phase is entered through a structural lowering of the cubic symmetry. In this phase, when a magnetic field is applied along a 2-fold cubic direction, a spin-flop transition of one fourth of the magnetic moments releases the magnetic frustration and triggers magnetostructural effects. At high field, these ultimately lead to an unusual spin reorientation associated with structural changes.

show abstract