Electronic transition in La1-xSrxTiO3

被引：65

作者：

Hays, CC ^{[1
]}

Zhou, JS ^{[1
]}

Markert, JT ^{[1
]}

Goodenough, JB ^{[1
]}

机构：

[1] Univ Texas, Texas Mat Inst, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.60.10367

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The transition with increasing x in La1-xSrxTiO3 from an antiferromagnetic, p-type polaronic conductor to an n-type metal with an enhanced Pauli paramagnetism was investigated by monitoring changes in structure, magnetic properties, and, under different hydrostatic pressures, the resistance and thermoelectric power of ceramic samples. We conclude that LaTiO3 is an itinerant-electron antiferromagnet and the transition is first order with a phase separation associated with cooperative oxygen;atom displacements that segregate strongly correlated states from Fermi-liquid states. The Neel temperature T-N approximate to 145 K decreases precipitously to 100 K at the phase limit x = 0.045 +/- 0.005; the two-phase domain extends over the compositions 0.045 less than or equal to x less than or equal to 0.08. [S0163-1829(99)04638-X].

引用

页码：10367 / 10373

页数：7

共 30 条

[1] The structural and magnetic properties of Nd1-xTiO3 for x=0, 0.05, and 0.10 [J].