Emergent magnetic phase transitions in Fe-doped SrTiO3- δ

Yujuan Pei; Ruyi Zhang; Yang Song; Jiachang Bi; Wei Xu; Chen Zhou; Junxi Duan; Jingkai Yang; Yanwei Cao

doi:10.1063/1.5116671

Emergent magnetic phase transitions in Fe-doped SrTiO_{3- δ}

Yujuan Pei, Ruyi Zhang, Yang Song, Jiachang Bi, Wei Xu, Chen Zhou, Junxi Duan, Jingkai Yang, Yanwei Cao

School of Physics

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

3 Citations (Scopus)

Abstract

In defect engineering, both cation doping and oxygen vacancies play key roles in deciding the properties of oxide, and the utilization of their cooperation has attracted much interest in recent years. Here, we report an emergent magnetic phase transition near 18 K in Fe-doped SrTiO_3-δ by utilizing the magnetic interactions between the doped Fe cations and oxygen vacancies. The effects of Fe dopants and oxygen vacancies on the structural and magnetic properties were characterized by a high-resolution X-ray diffraction, Raman spectroscopy, and superconducting quantum interference device. In particular, as the temperature rises across the magnetic phase transition, the coercivity of Fe-SrTiO_3-δ decreases from ∼7700 Oe at 2 K to ∼104 Oe at 19 K. Our results of creating emergent magnetic phases with the coeffects of both cation dopants and oxygen vacancies could pave a way to inducing novel quantum states in epitaxial films on Fe-SrTiO_3-δ single crystal substrates with the magnetic proximity effect.

Original language	English
Article number	125302
Journal	AIP Advances
Volume	9
Issue number	12
DOIs	https://doi.org/10.1063/1.5116671
Publication status	Published - 3 Dec 2019

Access to Document

10.1063/1.5116671

Cite this

@article{1e3b659451064c09a365d9229ec7b76f,

title = "Emergent magnetic phase transitions in Fe-doped SrTiO3- δ",

abstract = "In defect engineering, both cation doping and oxygen vacancies play key roles in deciding the properties of oxide, and the utilization of their cooperation has attracted much interest in recent years. Here, we report an emergent magnetic phase transition near 18 K in Fe-doped SrTiO3-δ by utilizing the magnetic interactions between the doped Fe cations and oxygen vacancies. The effects of Fe dopants and oxygen vacancies on the structural and magnetic properties were characterized by a high-resolution X-ray diffraction, Raman spectroscopy, and superconducting quantum interference device. In particular, as the temperature rises across the magnetic phase transition, the coercivity of Fe-SrTiO3-δ decreases from ∼7700 Oe at 2 K to ∼104 Oe at 19 K. Our results of creating emergent magnetic phases with the coeffects of both cation dopants and oxygen vacancies could pave a way to inducing novel quantum states in epitaxial films on Fe-SrTiO3-δ single crystal substrates with the magnetic proximity effect.",

author = "Yujuan Pei and Ruyi Zhang and Yang Song and Jiachang Bi and Wei Xu and Chen Zhou and Junxi Duan and Jingkai Yang and Yanwei Cao",

note = "Publisher Copyright: {\textcopyright} 2019 Author(s).",

year = "2019",

month = dec,

day = "3",

doi = "10.1063/1.5116671",

language = "English",

volume = "9",

journal = "AIP Advances",

issn = "2158-3226",

publisher = "American Institute of Physics",

number = "12",

}

TY - JOUR

T1 - Emergent magnetic phase transitions in Fe-doped SrTiO3- δ

AU - Pei, Yujuan

AU - Zhang, Ruyi

AU - Song, Yang

AU - Bi, Jiachang

AU - Xu, Wei

AU - Zhou, Chen

AU - Duan, Junxi

AU - Yang, Jingkai

AU - Cao, Yanwei

PY - 2019/12/3

Y1 - 2019/12/3

N2 - In defect engineering, both cation doping and oxygen vacancies play key roles in deciding the properties of oxide, and the utilization of their cooperation has attracted much interest in recent years. Here, we report an emergent magnetic phase transition near 18 K in Fe-doped SrTiO3-δ by utilizing the magnetic interactions between the doped Fe cations and oxygen vacancies. The effects of Fe dopants and oxygen vacancies on the structural and magnetic properties were characterized by a high-resolution X-ray diffraction, Raman spectroscopy, and superconducting quantum interference device. In particular, as the temperature rises across the magnetic phase transition, the coercivity of Fe-SrTiO3-δ decreases from ∼7700 Oe at 2 K to ∼104 Oe at 19 K. Our results of creating emergent magnetic phases with the coeffects of both cation dopants and oxygen vacancies could pave a way to inducing novel quantum states in epitaxial films on Fe-SrTiO3-δ single crystal substrates with the magnetic proximity effect.

AB - In defect engineering, both cation doping and oxygen vacancies play key roles in deciding the properties of oxide, and the utilization of their cooperation has attracted much interest in recent years. Here, we report an emergent magnetic phase transition near 18 K in Fe-doped SrTiO3-δ by utilizing the magnetic interactions between the doped Fe cations and oxygen vacancies. The effects of Fe dopants and oxygen vacancies on the structural and magnetic properties were characterized by a high-resolution X-ray diffraction, Raman spectroscopy, and superconducting quantum interference device. In particular, as the temperature rises across the magnetic phase transition, the coercivity of Fe-SrTiO3-δ decreases from ∼7700 Oe at 2 K to ∼104 Oe at 19 K. Our results of creating emergent magnetic phases with the coeffects of both cation dopants and oxygen vacancies could pave a way to inducing novel quantum states in epitaxial films on Fe-SrTiO3-δ single crystal substrates with the magnetic proximity effect.

UR - http://www.scopus.com/inward/record.url?scp=85075918088&partnerID=8YFLogxK

U2 - 10.1063/1.5116671

DO - 10.1063/1.5116671

M3 - Article

AN - SCOPUS:85075918088

SN - 2158-3226

VL - 9

JO - AIP Advances

JF - AIP Advances

IS - 12

M1 - 125302

ER -

Emergent magnetic phase transitions in Fe-doped SrTiO_{3- δ}

Abstract

Access to Document

Other files and links

Fingerprint

Cite this