Room-temperature ferrimagnetism of anti-site-disordered $\mathrm{C}{\mathrm{a}}_{2}\mathrm{MnOs}{\mathrm{O}}_{6}$

Room-temperature ferrimagnetism of anti-site-disordered $C a_{2} MnOs O_{6}$

Hai L. Feng (冯海), Madhav Prasad Ghimire, Zhiwei Hu, Sheng-Chieh Liao, Stefano Agrestini, Jie Chen, Yahua Yuan, Yoshitaka Matsushita, Yoshihiro Tsujimoto, Yoshio Katsuya, Masahiko Tanaka, Hong-Ji Lin, Chien-Te Chen, Shih-Chang Weng, Manuel Valvidares, Kai Chen, Francois Baudelet, Arata Tanaka, Martha Greenblatt, Liu Hao Tjeng, and Kazunari Yamaura

Phys. Rev. Materials 3, 124404 – Published 16 December 2019

Abstract

Room-temperature ferrimagnetism was discovered for the anti-site-disordered perovskite $C a_{2} MnOs O_{6}$ with $T_{c} = 305 K$ . $C a_{2} MnOs O_{6}$ crystallizes into an orthorhombic structure with a space group of Pnma, in which Mn and Os share the oxygen-coordinated-octahedral site at an equal ratio without a noticeable ordered arrangement. The material is electrically semiconducting with variable-range-hopping behavior. X-ray absorption spectroscopy confirmed the trivalent state of the Mn and the pentavalent state of the Os. X-ray magnetic circular dichroism spectroscopy reveals that the Mn and Os magnetic moments are aligned antiferromagnetically, thereby classifying the material as a ferrimagnet which is in accordance with band structure calculations. It is intriguing that the magnetic signal of the Os is very weak, and that the observed total magnetic moment is primarily due to the Mn. The $T_{c} = 305 K$ is the second highest in the material category of so-called disordered ferromagnets such as $CaR u_{1 - x} M n_{x} O_{3}$ , $SrR u_{1 - x} C r_{x} O_{3}$ , and $CaI r_{1 - x} M n_{x} O_{3}$ , and hence, may support the development of spintronic oxides with relaxed requirements concerning the anti-site disorder of the magnetic ions.

5 More

Received 7 August 2019

DOI:https://doi.org/10.1103/PhysRevMaterials.3.124404

Physics Subject Headings (PhySH)

Ferrimagnetism

Ferrimagnets

X-ray absorption spectroscopy X-ray magnetic circular dichroism

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Hai L. Feng (冯海)^1,2,3,*,†, Madhav Prasad Ghimire ^4,5,6, Zhiwei Hu², Sheng-Chieh Liao², Stefano Agrestini^2,7, Jie Chen^1,8, Yahua Yuan^1,9, Yoshitaka Matsushita ¹⁰, Yoshihiro Tsujimoto^1,8, Yoshio Katsuya ¹¹, Masahiko Tanaka¹¹, Hong-Ji Lin¹², Chien-Te Chen¹², Shih-Chang Weng¹², Manuel Valvidares⁷, Kai Chen¹³, Francois Baudelet¹³, Arata Tanaka ¹⁴, Martha Greenblatt ³, Liu Hao Tjeng², and Kazunari Yamaura^1,8,*

¹Research Center for Functional Material, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
²Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, 01187 Dresden, Germany
³Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, USA
⁴Central Department of Physics, Tribhuvan University, Kirtipur, 44613 Kathmandu, Nepal
⁵Leibniz Institute for Solid State and Materials Research, IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany
⁶Condensed Matter Physics Research Center, Butwal-11, Rupandehi, Nepal
⁷ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain
⁸Graduate School of Chemical Sciences and Engineering, Hokkaido University, North 10 West 8, Kita-ku, Sapporo, Hokkaido 060–0810, Japan
⁹School of Physics and Electronics, Central South University, Changsha 410083, China
¹⁰Materials Analysis Station, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
¹¹Synchrotron x-ray Station at SPring-8, National Institute for Materials Science, Kouto 1-1-1, Sayo-cho, Hyogo 679–5148, Japan
¹²National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu 30076, Taiwan, ROC
¹³Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, 91192 Gif-sur-Yvette Cedex, France
¹⁴Department of Quantum Matter, ADSM, Hiroshima University, Higashi-Hiroshima 739–8526, Japan

^*Corresponding authors hai.feng@iphy.ac.cn, hai.feng_nims@ hotmail.com; yamaura.kazunari@nims.go.jp
^†Present address: The Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China.

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 3, Iss. 12 — December 2019

Reuse & Permissions

Access Options

Article Available via CHORUS

Download Accepted Manuscript

Author publication services for translation and copyediting assistance advertisement

Physical Review Materials

Room-temperature ferrimagnetism of anti-site-disordered Ca2MnOsO6

Phys. Rev. Materials 3, 124404 – Published 16 December 2019

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

Article Text (Subscription Required)

Supplemental Material (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Room-temperature ferrimagnetism of anti-site-disordered $C a_{2} MnOs O_{6}$