Dielectric and conductivity properties of flux grown Ce doped NBT-BT single crystals

被引：9

作者：

Sundari, S. Shanmuga ^{[1
,2
]}

Kumar, Binay ^{[3
]}

Dhanasekaran, R. ^{[1
]}

机构：

[1] Anna Univ, Crystal Growth Ctr, Chennai 600025, Tamil Nadu, India

[2] PSGR Krishnammal Coll Women, Coimbatore 641004, Tamil Nadu, India

[3] Univ Delhi, Dept Phys & Astrophys, Crystal Lab, Delhi 110007, India

来源：

PHYSICA B-CONDENSED MATTER | 2020年 / 582卷

关键词：

Relaxor ferroelectrics; Crystal growth; Dielectric relaxation; X-ray diffraction; Activation energy; MORPHOTROPIC-PHASE-BOUNDARY; ELECTRICAL-PROPERTIES; TRANSITIONS; BEHAVIOR; SYSTEM;

D O I：

10.1016/j.physb.2019.411978

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

To study the effect of Ce in the NBT-BT lattice, 0.4 wt% of CeO2 was added to the 0.94(Na0.5Bi0.5TiO3)-0.06BaTiO(3), in its morphotmpic phase boundary (MPB) composition, and the single crystals were grown by the flux method using Bi2O3 as a flux. The structural studies were carried by the XRD and Raman analyses. The dielectric constants were measured from room temperature to 400 degrees C for various frequencies in the range of 20 Hz-2 MHz. The anti-ferroelectric temperature region is increasing due to the addition of Ce in the NBT-BT. The maximum value of dielectric loss is also found to decrease from 0.4% to 0.1% due to the Ce addition. The conductivity and impedance analyses were carried out to study the relaxation process of Ce-NBT-BT single crystals.

引用

页数：7

共 28 条

[11] Some effects of different additives on dielectric and piezoelectric properties of (Bi1/2Na1/2)TiO3-BaTiO3 morphotropic-phase-boundary composition [J].

Li, HD ;

Feng, CD ;

Yao, WL .

MATERIALS LETTERS, 2004, 58 (7-8) :1194-1198

[12] Low-temperature superlattice in monoclinic PbZr0.52Ti0.48O3 -: art. no. 060103 [J].

Noheda, B ;

Wu, L ;

Zhu, Y .

PHYSICAL REVIEW B, 2002, 66 (06) :601031-601034

[13] Ultrahigh strain and piezoelectric behavior in relaxor based ferroelectric single crystals [J].

Park, SE ;

Shrout, TR .

JOURNAL OF APPLIED PHYSICS, 1997, 82 (04) :1804-1811

[14] A diffuse phase transition study on Ba2+ substituted (Na0.5Bi0.5)TiO3 ferroelectric ceramic [J].

Rao, K. Sambasiva ;

Tilak, B. ;

Rajulu, K. Ch. Varada ;

Swathi, A. ;

Workineh, Haileeyesus .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (25) :7121-7129

[15] Study of the morphotropic phase boundary in the lead-free Na1/2Bi1/2TiO3-BaTiO3 system by Raman spectroscopy [J].

Rout, Dibyaranjan ;

Moon, Kyoung-Seok ;

Rao, V. Shankar ;

Kang, Suk-Joong L. .

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2009, 117 (1367) :797-800

[16] Ferroelectric/relaxor crossover in compositionally disordered perovskites [J].

Samara, GA ;

Venturini, EL .

PHASE TRANSITIONS, 2006, 79 (1-2) :21-40

[17] Lone-Pair-Induced Covalency as the Cause of Temperature- and Field-Induced Instabilities in Bismuth Sodium Titanate [J].

Schuetz, Denis ;

Deluca, Marco ;

Krauss, Werner ;

Feteira, Antonio ;

Jackson, Tim ;

Reichmann, Klaus .

ADVANCED FUNCTIONAL MATERIALS, 2012, 22 (11) :2285-2294

[18] Dielectric, structural and Raman studies on (Na0.5Bi0.5TiO3)(1-x)( BiCrO3)x ceramic [J].

Selvamani, Rachna ;

Singh, Gurvinderjit ;

Sathe, Vasant ;

Tiwari, V. S. ;

Gupta, P. K. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2011, 23 (05)

[19]

SMOLENSKII GA, 1961, SOV PHYS-SOL STATE, V2, P2651

[20] (BI1/2NA1/2)TIO3-BATIO3 SYSTEM FOR LEAD-FREE PIEZOELECTRIC CERAMICS [J].

TAKENAKA, T ;

MARUYAMA, K ;

SAKATA, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1991, 30 (9B) :2236-2239

← 1 2 3 →