Synthesis of a novel solid solution system GdNb_1-xW_xO_4+δ through substituting W for Nb has been investigated by a solid-state reaction method. It is found that the structure of the system changed from a monoclinic fergusonite phase to a tetragonal scheelite phase with increasing W substitution and that a single tetragonal scheelite phase could be obtained at room temperature with the composition of 0.3 ≤ x ≤ 0.7. The structural phase transition temperature decreases with increasing W substitution and the tetragonal scheelite phase can be stabilized by the W substitution, as reveals by Synchrotron powder X-ray diffraction. The conductivity of GdNbO₄ is significantly improved by the substitution of W for Nb and that of GdNb_1-xW_xO_4+δ (0.4 ≤ x ≤ 0.6) samples reach 10⁻⁵ S cm⁻¹ at an intermediate temperature of 600 °C. The activation energy of the conductivity for the substituted samples is almost constant regardless of the temperature and the W substitution amount.

通过固相反应法研究了用W代替Nb合成新型固溶体系GdNb _{1- x} W _x O _{4+ δ的}方法。据发现，从单斜褐相变为四方白钨矿相W置换增加并且单个四方白钨矿相系统的结构可在室温下用0.3≤的组合物来获得 X  ≤0.7。结构相变温度随着W取代的增加而降低，并且通过W取代可以稳定四方白钨矿相，这是通过Synchrotron粉末X射线衍射揭示的。GdNbO ₄的电导率的GdNb由W为Nb的置换并且被显著改善_{1- X} w ^ _X ø _{4+ δ}（0.4≤  X  ≤0.6）的样品达到10 ^-5 小号厘米^-1，在600℃的中间温度。取代样品的电导率的活化能几乎恒定，与温度和W取代量无关。