掺杂

Magnetic property survey of the samples indicates radius and magnetic torque of the doping RE ion have important effect on magnetoresistance of the sample.

样品的磁性质测量表明掺杂稀土离子的半径及磁矩对材料的磁电阻有明显影响。

Modified spinel lithium manganate with zirconium doped LiMn(subscript 2-x)ZrO4 (x=0, 0.01, 0.02, 0.04, 0.06, 0.08, 0.10) used for cathode of lithium-ion batteries was prepared by solid-state method.

采用高温固相法合成了掺杂改性的尖晶石型LiMn(下标 2-x)ZrO4(x=0， 0.01， 0.02， 0.04， 0.06， 0.08， 0.10)作为锂离子电池阴极材料。

The lanthanum doped modified spinel lithium manganate LiMn(subscript 2-x)LaO4 (x=0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.10) used for cathode of lithium-ion batteries was prepared by solid-state method.

采用高温固相法，合成了掺杂改性的锂离子电池阴极材料尖晶石结构的LiMn(下标 2-x)LaO4(x=0、0.01、0.02、0.03、0.04、0.05、0.10)。

The influences of transition element doping on the transport properties of layered perovskite manganite La1.2Ca1.8Mn2O7 were investigated.

研究了过渡金属元素掺杂对层状钙钛矿结构锰氧化物 La1.2Ca1.8Mn2O7体系输运性质的影响。

Chapter one: At the beginning of this chapter, we reviewed the history of manganite research. And then we laid an emphasis on the discussion of its physical properties-including crystalline structure, magnetic structure, electron structure and electromagnetic behavior, and related interactions in the system. After that we introduced some elementary properties of layered manganites.

第一章 首先简要回顾了超大磁电阻研究的发展历史，然后着重介绍了掺杂锰氧化合物的各种物性——晶体结构、磁结构、电子结构和电磁特性，及相关的各种相互作用，并对层状锰氧化物的基本性质作了简要介绍。

In order to obtain the high MR value at the room temperature in a low applied magnetic field, several methods have been employed to modify the structure of the compounds, such as introducing the substituting ions or the interstitial atoms into this manganite matrix.

人们致力于通过掺杂、填隙等方法改变材料内部的结构，研究它的电磁输运性质，同时期望在较高的温度以及较小的外加磁场下得到较大的磁电阻效应。

We also studied the structural distortion of the MnO〓 octahedron induced by the vacancies of the A-site in manganite, and the influence on the magnetic and transport properties.

在本文中，我们研究了四价离子在锰位掺杂对锰氧化物材料性能的影响，并比较了上述两种理论的适用性和合理性；同时，我们还研究了A位空穴锰氧化物体系中MnO〓八面体的结构畸变，以及对磁学特性和电导行为的影响。

Chapter 1: The general review of the history and present research situation of the perovskite manganite oxides physics and thin films is given, such as the crystal and electronic structure, double exchange model, charge-ordering, electronic transport, CMR effect, phase separation, effects of doping level and so on, are introduced.

第一章全面介绍了巨磁阻锰氧化物的物理和薄膜的研究状况。首先回顾了锰氧化物的各种性质，如晶体结构，电子结构，双交换模型，电荷有序，输运性与巨磁效应，相分离，掺杂效应等。

Experimentally,at low temperature and with doping x(0≤x≤1),some manganite may have very differentphases,ferromagnetic or antiferromagnetic,with or without orbital or charge order.

实验上发现，在低温下，随着掺杂浓度x的变化(0≤x≤1)，锰氧化物可以出现铁磁序或多种形式的反铁磁序；可以出现不同类型的轨道序，也可以没有轨道序；可以有电荷序，也可以没有电荷序。

Among the manganite oxides, Sr-doped LaMnO_3 have been a focus of intensive studies since the discovery of relatively higher Curie temperature and CMR.

在钙钛矿锰氧化物庞磁阻材料中，Sr掺杂的锰酸镧(LaMnO_3)相较于其他材料具有较高的居里温度及相对较大的庞磁电阻特性，其在高密度读出磁头方面潜在的巨大市场更是受到了格外的重视。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。