点缺陷引起中子辐照MgO(110)单晶的铁磁性

doi:10.3866/PKU.WHXB201709043

Acta Phys. -Chim. Sin. ›› 2018, Vol. 34 ›› Issue (4): 437-444.doi: 10.3866/PKU.WHXB201709043

• ARTICLE • Previous Articles

Point Defects Induced Ferromagnetism in Neutron Irradiated MgO(110) Single Crystals

Mengxiong CAO¹,Xingyu WANG¹,Yaru MA¹,Chunlin MA¹,Weiping ZHOU^1,*(),Xiaoxiong WANG¹,Haiou WANG²,Weishi TAN^1,^3,*()

¹ Key Laboratory of Soft Chemistry and Functional Materials of Ministry of Education, Department of Applied Physics, School of Science, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
² Institute of Materials Physics, Hangzhou Dianzi University, Hangzhou 310018, P. R. China
³ College of Communication and Electronic Engineering, Hunan City University, Yiyang 413002, Hunan Province, P. R. China

Received:2017-08-18 Published:2018-01-02
Contact: Weiping ZHOU,Weishi TAN E-mail:wpzhou@njust.edu.cn;tanweishi@njust.edu.cn
Supported by:
the National Natural Science Foundation of China(U1332106);the National Natural Science Foundation of China(11604147);the National Natural Science Foundation of China(11604067);Scientific Research Innovation Projects of Jiangsu Province for University Graduate Students, China(CXLX13_179)

Abstract

Abstract:

The MgO(110) single crystals were neutron-irradiated with different doses ranging from 1.0×10¹⁶ to 1.0×10²⁰ cm^-2. The isointensity profiles of the X-ray diffuse scattering caused by the cubic and double-force point defects in MgO were calculated on the basis of the Huang scattering theory. The X-ray diffuse scattering and the UV-Vis absorption spectra were recorded to investigate the point defect configurations in the MgO(110) crystals. Furthermore, the magnetic properties were characterized by a superconducting quantum interference device magnetometer. The ω–2θ curves and rocking curves implied that neutron irradiation enhanced the lattice distortion. The point defects were produced in irradiated MgO crystals. The measured reciprocal space mappings (RSMs) revealed that the notable diffuse scattering was presented in irradiated MgO. Compared with the calculated diffuse scattering intensity profile, it was evident that Frenkel defects were introduced in the irradiated samples. The UV-Vis spectra indicated that anion O vacancy defects had been introduced in irradiated MgO. The single vacancies could be aggregated in irradiated samples with higher doses (1.0×10¹⁹ and 1.0×10²⁰ cm^-2). Although the irradiated MgO(110) single crystals were diamagnetic at room temperature, they became ferromagnetic at low temperature. The maximum saturation magnetization was found to be 0.058 emu·g^-1. By means of neutron irradiation, defect-mediated ferromagnetism could be achieved at low temperature. The correlation between ferromagnetism and O vacancies in neutron-irradiated MgO could be described using F-center exchange mechanism.

Key words: MgO single crystal, Neutron irradiation, Point defect, d⁰ ferromagnetism, RSM, Color center

MSC2000:

O649

Mengxiong CAO,Xingyu WANG,Yaru MA,Chunlin MA,Weiping ZHOU,Xiaoxiong WANG,Haiou WANG,Weishi TAN. Point Defects Induced Ferromagnetism in Neutron Irradiated MgO(110) Single Crystals[J].Acta Phys. -Chim. Sin., 2018, 34(4): 437-444.

References

1	Venkatesan M. ; Fitzgerald C. B. ; Coey J. M. D. Nature 2004, 430, 630.
2	Wang S. ; Pan L. ; Song J. ; Mi W. ; Zou J. ; Wang L. ; Zhang X. J. Am. Chem. Soc. 2015, 137, 2975.
3	Patel S. K. S. ; Dewangan K. ; Srivastav S. K. ; Gajbhiye N. S. Curr. Appl. Phys. 2014, 14, 905.
4	Phokha S. ; Swatsitang E. ; Maensiri S. Electron. Mater. Lett. 2015, 11, 1012.
5	Yang G. ; Gao D. ; Zhang J. ; Zhang J. ; Shi Z. ; Xue D. J. Phys. Chem. C 2011, 115, 16814.
6	Bhaumik S. ; Sinha A. K. ; Ray S. K. ; Das A. K. IEEE Trans. Magn. 2014, 50, 2400206.
7	Das A. K. ; Srinivasan A. J. Magn. Magn. Mater. 2016, 404, 190.
8	Coey J. M. D. Solid State Sci. 2005, 7, 660.
9	Seike M. ; Sato K. ; Katayama-Yoshida H. Jpn. J. Appl. Phys. 2011, 50, 090204.
10	Hu J. ; Zhang Z. ; Zhao M. ; Qin H. ; Jiang M. Appl. Phys. Lett. 2008, 93, 192503.
11	Khamkongkaeo A. ; Mothaneeyachart N. ; Sriwattana P. ; Boonchuduang T. ; Phetrattanarangsi T. ; Thongchai C. ; Sakkomolsri B. ; Pimsawat A. ; Daengsakul S. ; Phumying S. ; Chanlek N. ; Kidkhunthod P. ; Lohwongwatana B. J. Alloy. Compd. 2017, 705, 668.
12	Li J. ; Jiang Y. ; Bai G. ; Ma T. ; Yang D. ; Du Y. ; Yan M. Appl. Phys. A 2014, 115, 997.
13	Singh J. P. ; Chen C. L. ; Dong C. L. ; Prakash J. ; Kabiraj D. ; Kanjilal D. ; Pong W. F. ; Asokan K. Superlattices Microstruct. 2015, 77, 313.
14	Kuang F. ; Kang S. ; Kuang X. ; Chen Q. RSC Adv. 2014, 4, 51366.
15	Uchino T. ; Yoko T. Phys. Rev. B 2013, 87, 144414.
16	Merabet B. ; Kacimi S. ; Mir A. ; Azzouz M. ; Zaoui A. Mod. Phys. Lett. B 2015, 29, 1550147.
17	Glinchuk M. D. ; Eliseev E. A. ; Khist V. V. ; Morozovska A. N. Thin Solid Films 2013, 534, 685.
18	Zhang Y. ; Feng M. ; Shao B. ; Lu Y. ; Liu H. ; Zuo X. J. Appl. Phys. 2014, 115, 17A926.
19	Kumar A. ; Kumar J. ; Priya S. Appl. Phys. Lett. 2012, 100, 192404.
20	Maoz B. M. ; Tirosh E. ; Sadan M. B. ; Markovich G. Phys. Rev. B 2011, 83, 161201.
21	Mishra D. ; Mandal B. P. ; Mukherjee R. ; Naik R. ; Lawes G. ; Nadgorny B. Appl. Phys. Lett. 2013, 103, 182204.
22	Phokha S. ; Klinkaewnarong J. ; Hunpratub S. ; Boonserm K. ; Swatsitang E. ; Maensiri S. J. Mater. Sci.: Mater. Electron. 2016, 27, 33.
23	Flocken J. W. ; Hardy J. R. Phys. Rev. B 1970, 1, 2472.
24	Bachiller-Pere D. ; Debelle A. ; ThoméL. ; Crocombette J. J. Mater. Sci. 2016, 51, 1456.
25	Pillukat A. ; Karsten K. ; Ehrhart P. Phys. Rev. B 1996, 53, 7823.
26	Karsten K. ; Ehrhart P. Phys. Rev. B 1995, 51, 508.
27	Ruan Y. ; Ma P. ; Liu J. ; Li W. ; Liu C. J. Rare Earths 2006, 24, 56.
28	Monge M. A. ; Popov A. I. ; Ballesteros C. ; González R. ; Chen Y. ; Kotomin E. A. Phys. Rev. B 2000, 62, 9299.
29	Gao F. ; Hu J. ; Yang C. ; Zheng Y. ; Qin H. ; Sun L. ; Kong X. ; Jiang M. Solid State Commun. 2009, 149, 855.
30	Osorio-Guillén J. ; Lany S. ; Barabash S. V. ; Zunger A. Phys. Rev. Lett. 2006, 96, 107203.
31	Prucnal A. ; Shalimov A. ; Ozerov M. ; Potzger K. ; Skorupa W. J. Cryst. Growth 2012, 339, 70.
32	Yang G. ; Gao D. ; Shi Z. ; Zhang Z. ; Zhang J. ; Zhang J. ; Xue D. J. Phys. Chem. C 2010, 114, 21989.
33	Gao D. ; Li J. ; Li Z. ; Zhang Z. ; Zhang J. ; Shi H. ; Xue D. J. Phys. Chem. C 2010, 114, 11703.
34	Coey J. M. D. ; Venkatesan M. ; Fitzgerald C. B. Nature Mater. 2005, 4, 173.
35	Singhal R. K. ; Kumari P. ; Samariya A. ; Kumar S. ; Sharma S. C. ; Xing Y. T. ; Saitovitch E. Appl. Phys. Lett. 2010, 97, 172503.
36	Singhal R. K. ; Kumar S. ; Kumari P. ; Xing Y. T. ; Saitovitch E. Appl. Phys. Lett. 2011, 98, 092510.
37	Shah L. R. ; Ali B. ; Zhu H. ; Wang W. G. ; Song Y. Q. ; Zhang H. W. ; Shah S. I. ; Xiao J. Q. J. Phys.: Condens. Matter 2009, 21, 486004.

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Point Defects Induced Ferromagnetism in Neutron Irradiated MgO(110) Single Crystals

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