Slow dynamics and ergodicity breaking in a lanthanum-modified lead zirconate titanate relaxor system

Kutnjak, Zdravko; Filipič, C.; Pirc, R.; Levstik, A.; Farhi, R.; Marssi, M. El

doi:10.1103/physrevb.59.294

Cited by 165 publications

(104 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the present study, the Ti-Ni-Fe ternary alloy with nominal composition 4 Ti 50 Ni 44.5 Fe 5.5 was prepared by induction melting and casting with a mixture of 99.9% pure Ti, 99.9% pure Ni and 99.9% pure Fe in the flow of argon gas. As Ti is highly active metal 20 , CaO crucibles instead of graphite ones were employed in order to avoid the reaction between container and Ti during the induction melting at high temperatures.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Stress-induced strain glass to martensite (R) transition in a Ti50Ni44.5
Zhang
¹
,
Wang
²
,
Ding
³

et al. 2011
Phys. Rev. B
28
1
19
0
View full text Add to dashboard Cite

Strain glass (STG) in Ni-rich binary Ti-Ni possesses an R-like (rhombohedral) local strain order, but it transforms into B19' martensite under stress. It remains a puzzle why the local strain order in STG yields a different long-range strain order.Here, we systematically investigated a ternary Ti 50 Ni 44.5 Fe 5.5 STG, which exhibited the same STG features as the binary STG, and the local strain order is also an R-like one.Being different from the binary STG, under stress this ternary STG transforms into a normal R-phase rather than B19'. By considering that both systems have bi-instability with respect to both R and B19' martensites in the schematic free energy landscape, we provide a unified explanation for the different products of the stress-induced STG to martensite (STG-M) transition between Ti-Ni binary system and the present ternary system. We show that the difference stems from the competing thermodynamic stability between R-phase and B19' martensites.2

show abstract

Section: Methodsmentioning

confidence: 99%

“…Hence it exhibits the breaking of ergodicity [2][3][4] ; this challenges the basic assumption of statistical mechanics. Glassy phenomena have been discovered in various systems, such as ferroelectric, magnetic, superconductive and biological systems, etc.…”

Section: Introductionmentioning

confidence: 99%

Stress-induced strain glass to martensite (R) transition in a Ti50Ni44.5
Zhang
¹
,
Wang
²
,
Ding
³

et al. 2011
Phys. Rev. B
28
1
19
0
View full text Add to dashboard Cite

show abstract

“…23 While normal ferroelectrics undergo a spontaneous phase transition from a paraelectric state to a ferroelectric order upon cooling, PNRs in many relaxors do not percolate throughout the whole sample upon cooling. In contrast, they freeze from a high temperature ergodic relaxor state to a low-temperature nonergodic state 24 without macroscopically discernable symmetry change. 12 In the nonergodic state, a ferroelectric long range order can often be induced by a sufficiently large electric field.…”

Section: Introductionmentioning

confidence: 99%

Influence of electric fields on the depolarization temperature of Mn-doped (1-x)Bi1/2Na1/2TiO3-xBaTiO3

Sapper¹,

Schaab²,

Jo³

et al. 2012

Journal of Applied Physics

136

107

View full text Add to dashboard Cite

Articles you may be interested inElectric-field-temperature phase diagram of the ferroelectric relaxor system (1−x)Bi1/2Na1/2TiO3−xBaTiO3 doped with manganese J. Appl. Phys. 115, 194104 (2014) . Temperature-dependent permittivity e 0 (T) and thermally stimulated depolarization currents (TSDC) of poled samples were measured under identical heating conditions to clarify the depolarization mechanism. In both methods, the influence of electric bias fields on the transition temperature was investigated. Fields applied in the poling direction shift the transition to higher temperatures, with corresponding results in e 0 (T) and TSDC measurements. While the response of transition temperature to external fields displays a similar trend in all investigated compositions, the shape of TSDC is clearly connected with the composition and, hence, the crystal symmetry of the sample. Furthermore, the comparison of e 0 (T) and TSDC data reveals a systematic shift between transition temperatures obtained with the two different methods.;

show abstract

“…Isto deve-se não somente as suas excelentes propriedades físicas [7], mas também a perfeita adequação de seu processamento à técnica de PUQ [4], o que possibilita a obtenção de CFT à base de PLZT nas mais variadas formas e tamanhos. O niobato de chumbo e magnésio -titanato de chumbo (PMN-PT), por sua vez, também é um material ferroelétrico que tem despertado grande interesse para possíveis aplicações em dispositivos eletro-ópticos.…”

unclassified

Cerâmicas ferroelétricas transparentes de PLZT e PLMN-PT: processamento e propriedades

et al. 2003

View full text Add to dashboard Cite

INTRODUÇÃOMateriais ferroelétricos possuem uma posição de amplo destaque na indústria eletro-eletrônica por apresentarem inúmeras aplicações práticas como sensores e atuadores. [1,2]. Este fato deve-se às suas excelentes propriedades físicas, as quais despertam interesses tecnológicos. Cerâmicas ferroelétricas transparentes (CFT), por sua vez, constituem uma classe de materiais de incontestável relevância para a indústria eletro-eletrônica, a qual tem recebido uma atenção especial nas últimas décadas [1,3]. Um material eletro-óptico pode ser definido como um meio no qual uma informação elétrica pode ser transformada em informação óptica, e também no qual suas funções ópticas possam ser controladas através da aplicação de campos elétricos externos [4]. Entre as principais aplicações das CFT podemos citar: dispositivos de armazenamento de imagem (holografia), displays, moduladores e filtros opticamente ativos, sensores, etc [3]. Esta vasta gama de possíveis aplicações está particularmente ligada a algumas propriedades físicas que devem ser apresentadas por estes materiais tanto na forma policristalina quanto na forma monocristalina. Estes aspectos podem ser sucintamente descritos como segue: 1-) altos ResumoCerâmicas ferroelétricas transparentes têm sido largamente empregadas em dispositivos ópticos e eletro-ópticos. Neste trabalho apresentamos recentes progressos alcançados pelo GCFerr/DF-UFSCar na obtenção de cerâmicas ferroelétricas transparentes, obtidas por prensagem uniaxial a quente. São apresentados resultados de caracterizações microestrutural, estrutural, óptica, dielétrica, piroelétrica, eletro-óptica, eletrostrictiva e ferroelétrica, em cerâmicas de titanato zirconato de chumbo modificado com lantânio (PLZT) e niobato de magnésio e chumbo -titanato de chumbo modificado com lantânio (PLMN-PT). Os resultados obtidos revelaram uma microestrutura homogênea, altos valores de densidade e ausência de fases segregadas para as cerâmicas de ambas composições. Conseqüentemente, altos valores de transmitância foram observados para as regiões visível e infravermelho próximo. As medidas elétricas também apresentaram excelentes resultados, quando comparados à literatura, demonstrando a alta qualidade das amostras obtidas. Palavras-chave: cerâmicas ferroelétricas transparentes, prensagem a quente, efeito eletro-óptico, dielétricos, piroelétricos. uniaxial hot-pressing technique, are presented. The physical property characterization, as microstructural, structural, optical, dielectrical, pyroelectric, electro-optical, electrostrictive and Abstract Transparent ferroelectric ceramics have been extensively employed in optical and electrooptical devices. The recent progresses achieved by the GCFerr/DF -UFSCar in the production of the transparent ferroelectric ceramics, through

show abstract

Slow dynamics and ergodicity breaking in a lanthanum-modified lead zirconate titanate relaxor system

Cited by 165 publications

References 32 publications

Stress-induced strain glass to martensite (R) transition in a Ti50Ni44.5
Zhang
¹
,
Wang
²
,
Ding
³

et al. 2011
Phys. Rev. B
28
1
19
0
View full text Add to dashboard Cite

Stress-induced strain glass to martensite (R) transition in a Ti50Ni44.5
Zhang
¹
,
Wang
²
,
Ding
³

et al. 2011
Phys. Rev. B
28
1
19
0
View full text Add to dashboard Cite

Influence of electric fields on the depolarization temperature of Mn-doped (1-x)Bi1/2Na1/2TiO3-xBaTiO3

Cerâmicas ferroelétricas transparentes de PLZT e PLMN-PT: processamento e propriedades

Contact Info

Product

Resources

About

Slow dynamics and ergodicity breaking in a lanthanum-modified lead zirconate titanate relaxor system

Cited by 165 publications

References 32 publications

Stress-induced strain glass to martensite (R) transition in a Ti50Ni44.5Zhang1, Wang2, Ding3 et al. 2011Phys. Rev. B281190View full textAdd to dashboardCite

Stress-induced strain glass to martensite (R) transition in a Ti50Ni44.5Zhang1, Wang2, Ding3 et al. 2011Phys. Rev. B281190View full textAdd to dashboardCite

Influence of electric fields on the depolarization temperature of Mn-doped (1-x)Bi1/2Na1/2TiO3-xBaTiO3

Cerâmicas ferroelétricas transparentes de PLZT e PLMN-PT: processamento e propriedades

Contact Info

Product

Resources

About

Stress-induced strain glass to martensite (R) transition in a Ti50Ni44.5
Zhang
¹
,
Wang
²
,
Ding
³

et al. 2011
Phys. Rev. B
28
1
19
0
View full text Add to dashboard Cite

Stress-induced strain glass to martensite (R) transition in a Ti50Ni44.5
Zhang
¹
,
Wang
²
,
Ding
³

et al. 2011
Phys. Rev. B
28
1
19
0
View full text Add to dashboard Cite